Industry News- Zhejiang Kunrong Rubber Technology Co., Ltd.

Jun 01,2023

How Forklift Tires Affect the Performance and Life of Your Lift Truck?

Forklift tires do a lot more than just get your lift truck from point A to B. They help cushion the ride for your operators, offer traction in rough terrain and can have a significant impact on how fast and easily your lift is able to maneuver. There are many factors that affect the performance and life of your forklift tires including the environment, type of load, operating conditions and maintenance.Shock AbsorptionProfessional forklift operators work long shifts, so a smooth ride is essential to their comfort and ability to perform their job. Forklifts with pneumatic tires are the best option for this because they absorb much of the shock from uneven ground. This leads to an easier ride and helps your operators come out of their shift feeling more refreshed and ready to work the next day.Pneumatic forklift tires can also offer better traction for outdoor use in rough environments than other tire options because of their deeper tread designs. This is especially important if your operation deals with a large amount of debris like in recycling centers or lumber yards.Solid or non-pneumatic tires (also known as stubby) are solid rubber rings that get pressed onto a metal rim. These forklift tires are less expensive than pneumatic tires and require very little maintenance. However, they tend to have poor traction and have a smaller turning radius.Air-filled pneumatic forklift tires can have flats if they are punctured or their air pressure falls below the recommended level. For this reason, they should be regularly checked and maintained to ensure the correct air pressure is present. This will prevent an odd or premature wear pattern from developing on the tires.
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May 22,2023

Advantages of solid tires and tubeless tires!

A solid tire is a tire corresponding to a pneumatic tire (hollow tire). Its carcass is solid and does not use cords as a skeleton and does not need to be inflated, so it does not need an inner tube or an airtight layer. The earliest tires were solid tires. Solid tires are currently only used for high-load vehicles or machinery traveling at low speeds, and also for machinery in fixed positions.Features:Solid tires have long service life, low deformation rate, reduce vehicle maintenance costs and increase driver comfort.Excellent safety performance, which is conducive to improving work efficiencyBecause the solid tire carcass is made of all rubber, the puncture resistance of the tire is guaranteed to the greatest extent, and the hidden danger of tire puncture during the load-bearing operation of industrial vehicles and in harsh working environments is fundamentally eliminated.The solid tire has a large load-small deformation and good running stability. Because of its puncture and tear resistance, it does not need to be inflated, avoiding the heavy labor of frequent tire repair and replacement, and can improve the utilization rate and work efficiency of the vehicle. In running vehicles, solid tires can completely replace pneumatic tires.Solid tires have long service life, low deformation rate, reduce vehicle maintenance costs and increase driver comfort.Excellent safety performance, which is conducive to improving work efficiencyBecause the solid tire carcass is made of all rubber, the puncture resistance of the tire is guaranteed to the greatest extent, and the hidden danger of tire puncture during the load-bearing operation of industrial vehicles and in harsh working environments is fundamentally eliminated. The load-deformation of solid tires is small, and the running stability is good. Because of its puncture and tear resistance, it does not need to be inflated, which avoids the heavy labor of frequent tire repair and replacement, and can improve the utilization rate and work efficiency of the vehicle. It can run at low speed and efficiently. In vehicles, solid tires can completely replace pneumatic tires.
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May 15,2023

What are the introductions for controlling the quality and driving speed of solid tires of loaders?

National tire standards specify the maximum load at the corresponding solid tire pressure at a given speed. The manufacturer's recommended tire pressure is based on the vehicle's load rating and the loads the tires will experience during normal operation. Therefore, the vehicle must be loaded according to the rated load calibrated by the loader, and an overload of 15% is acceptable under normal conditions. However, overloading will cause the tire to deform and seriously affect the service life of the tire. If it is necessary to overload the tire under special circumstances, the air-conditioning pressure of the tire should be increased appropriately, but it is not suitable for long-term use. The allowable radial deformation of this tire is 3% to 4% of the tire diameter. In actual operation, attention should be paid to the radial deformation of the tire so that the deformation does not exceed this range.Similarly, driving speed has a great influence on tire life. In actual use, speed and load have the same meaning, and in some cases speed is more important. In order to obtain the best use effect, if the vehicle speed is higher than the rated speed of the tire, the transportation load should be appropriately reduced; if the vehicle speed is lower than the rated tire speed, the transportation load can be appropriately increased. In actual use, due to the contact and friction between the tire and the ground, the carcass vibrates. As the vehicle speed increases, the circumferential and lateral deformation increases, and the temperature of the tire will rise sharply, resulting in a puncture.
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May 08,2023

What are the introductions about the comparison between the load capacity of solid tires and pneumatic tires?

Solid rubber tires and pneumatic tires (including radial tires and bias tires) have their own advantages. Solid rubber and tires have large loads, are puncture-resistant, and do not need to be repaired by themselves, eliminating the trouble of tire repair. In many companies Places with harsh environments, such as steel mills, timber factories, ceramic factories, and garbage as power plants, have a great advantage. Pneumatic tires can travel fast, and tire products are light in weight, so pneumatic tires can be used to produce tires with solid rubber. How much is the impact of the load capacity gap?Generally speaking, the load of solid tires of the same specification is much higher than that of pneumatic tires. The specific data should be determined according to the rubber, formula, manufacturing process of solid tires, rubber, formula, layer and other factors of pneumatic tires.Take the most commonly used 23.5-25, speed at 10km H/, about 31000kg single wheel, but only single 1600KG or so 23.5-25 24PR wheel load is the most common solid rubber wheel load of E3/L3 pattern, because solid tires are in With the absolute advantage of load bearing, solid tires are more and more widely used in various fields.Available sizes: 3.00-5, 3.50-6, 250-15, 300-15, 11.00-20, 23.5-25, 15x5, 12x4, etc.Applicable vehicles: various AGVs, sweepers, forklifts, trailers, loaders, aerial work platforms, etc.
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May 05,2023

The selection and installation of solid tires directly affect the service life!

The correct installation of solid tires is directly related to the service life of the tires, especially when replacing new tires. Tires of different types and patterns must not be arbitrarily mixed because the actual size and load capacity of each tire are different. In addition, if you cannot fully grasp the technology of changing tires yourself, we suggest that you still go to a professional tire shop or an authorized vehicle repairer for replacement.1. Keep the front and rear wheels in the correct orientationThe front wheel alignment has a great influence on the service life of the tire, especially the toe-in of the front wheel and the camber of the front wheel are the main factors. The camber of the front wheel will mainly accelerate the wear of the tire shoulder, that is, the eccentric wear; the toe-in of the front wheel will mainly accelerate the wear of the inner and outer sides of the tire.2. Air pressure must be consistentTire air pressure is the life of the tire. If the air pressure is too low, the deformation of the carcass will increase, and cracks will easily appear on the sidewall. At the same time, it will cause excessive heat generation, promote the aging of the rubber, tire the ply, and break the cord. If the air pressure is too low, it will increase the ground contact area of the tire and accelerate the tire shoulder wear; if the air pressure is too high, the tire cord will be deformed due to excessive extension, and the elasticity of the carcass will decrease, which will increase the load on the car during the trek. , In case of impact, internal cracking and blasting will occur. At the same time, if the air pressure is too high, it will accelerate the wear of the tire crown and reduce the rolling resistance.3. Driving habits meet scientific requirementsIn addition to handling the situation while driving, the driver should choose roads to trek to avoid sharp stones, glass, metal, etc. that may puncture and scratch the tires, avoid the adhesion of chemical spilled substances to the tires, and avoid corrosion of the tires; When traveling on a road with a high degree of gravity, try to trudge in the center to avoid and reduce the shift of the center of gravity of the car, and reduce the uneven wear of the tire due to the increase in the load on one side of the tire; reasonable loading is basic common sense, and under normal circumstances, 20% of the tire life is overloaded. The number is reduced by 30%, and the life of the tire is reduced by 50% when it is overloaded by 40%. Other sharp turns, emergency braking, high-speed starting and rapid acceleration will all have an impact on the tires, which are what the driver should avoid while driving.
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Apr 26,2023

What should be paid attention to in winter for forklift solid tires?

Due to the low temperature, the rubber of forklift solid tires becomes more brittle and less elastic. When the vehicle is left overnight or parked for a long time, the manufacturer of forklift solid tires reminds you that you should slowly lift the clutch pedal to start smoothly, and drive at a low speed for the first few kilometers. , After the temperature of the forklift tires rises, drive normally. If the vehicle has been parked on ice for a period of time, the ground contact may be frozen, so be extra careful when starting to prevent the tread from being torn. When the vehicle is parked in the open air for a long time in a severe cold area, in order to prevent the forklift tires from freezing with the ground, wood or sand should be placed under the tires.Some people tend to think that the tire pressure of the wheels in winter should be lower to increase the contact area between the tire and the ground, thinking that the friction will increase, which is safer. In fact, this kind of thinking is no longer suitable for the current situation. In the past, the tire pressure of car tires was generally high, and it is correct to lower the tire pressure in winter; but due to the needs of comfort, the normal tire pressure of current vehicles is already relatively low. If the pressure is lowered again, the tires will be easily damaged. Therefore, the tires of winter vehicles should be stamped according to the standard.When the tire pressure of the vehicle is low, the tire will deform greatly, that is, the friction surface with the ground will be increased. Especially when driving at high speed, because the speed of the tire increases, the heat generated by friction makes the local temperature of the tire rise sharply, and the tire blowout is very likely to occur. Compared with pneumatic tires, forklift solid tires have the advantages of high safety, puncture resistance, tear resistance, wear resistance and long life. They are ideal replacement products for pneumatic tires in the field of industrial vehicles. With the development of industrial vehicles and the improvement of solid tire production technology, this type of tire has been used more and more widely.
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Apr 17,2023

Why are most of the colors of industrial solid tires black?

In the 19th century, a car tire was born at that time. He kept the nature of rubber—white; a single color usually cannot meet the diversified pursuits of car owners. We began to add various dyes to the solid tires, and the tire colors began to Then it changed; in 1915, carbon black raw materials were added to tires, and it was accidentally discovered that the wear resistance of tires after adding carbon black was 4-5 times that of white tires; then black tires began to dominate the world. The editor of the solid tire manufacturer tells you why it is black? You may also think why the color of the tire can only be black? Can’t it be white, pink, or rainbow? In fact, this question was asked more than a hundred years ago Some people have thought about it, and it has been practiced vigorously. The result is that we chose black again by coincidence. History of tire discoloration: from colorful to black. In the 19th century, a car tire was born. It kept the nature of rubber—white; a single color usually cannot meet the diversified pursuits of car owners. We began to add various kinds of tires to tires. With different dyeing agents, the color of tires began to change accordingly; in 1915, carbon black raw materials were added to tires, and we suddenly found that the wear resistance of tires after adding carbon black was 4-5 times that of white tires; Tires began to rule the world.A colorful counterattack: an endless test. In the 1950s, in order to flaunt their magnificence, the tall and rich once again set their sights on the tires. This time it was more direct. The surface of the tire is washed and rinsed, and all kinds of colors can be painted out! Nowadays, XX paint is shouting "rewriting life" every day. Is it possible to find the idea from the tires that were washed and brushed in the last century? But this kind of decent project is easy to be unfinished. After a long time, the paint is easy to fall off, and the spots are very unsightly, so this method is gradually abandoned. In the 1960s, white tires made a comeback. Although they have been improved, their performance has not been greatly improved. Instead, the cost has soared. What is even more unbearable is that the color of white tires will turn brown and yellow after a long time, so they gradually decline. Later, in the 1980s, solid rubber tires with white fonts or white side bands appeared in developed countries, and some companies even developed transparent tires, but the practical significance was not great. With the development of science and technology, silicon dioxide replaces carbon black, and colorful tires stand out again. This time the technology is more mature, but the market acceptance is still not high.The "color" temptation is invalid, returning to the original. After two centuries of "color" temptation, after the "deviation" failed, we gradually got used to black. The color to flaunt the identity. Black is still the rule in the tire industry, but at the same time, technology has also given tires more colors, which only exist as decoration and fashion.
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Apr 10,2023

What is the function of the surface pattern of industrial solid tires?

The role of the surface pattern of industrial solid tires:The main function of the tire pattern is to increase the friction between the tread and the road surface to prevent the wheels from slipping, which is exactly the same as the sole pattern.The pattern design on the surface of the tire improves the ground contact elasticity of the tread. Under the action of tangential forces (such as driving force, braking force and lateral force) between the tread and the road surface, the pattern blocks can produce large tangential elastic deformation. As the tangential force increases, the tangential deformation becomes larger, and the "friction effect" of the contact surface is also enhanced, thereby controlling the tendency of the tread and the road to slip or slip. This largely eliminates the disadvantages of non-patterned (smooth tread) tires that are easy to slip, making the car performance related to the friction performance between the tire and the road surface - power, braking, steering and driving safety. Normal performance has a reliable guarantee.Studies have shown that the factors that generate friction between the tread and the road surface also include the adhesion between the two surfaces, the molecular gravitational force, and the micro-cutting effect of the small-sized asperities on the road surface, etc., but the main effect is still Elastic deformation of tread blocks.The use of different pattern designs also greatly affects the overall performance of the tire, and different patterns represent different product positioning. For ice and snow roads, cement roads and better gravel and dirt roads, tires with ordinary pattern treads and gravel roads should be used. Cars often drive on asphalt marine concrete roads, which can improve the drainage capacity when passing through wet roads, improve the friction of tires on bad roads, and make various patterns of different shapes to help tires dissipate heat and prevent lateral slipping of car tire treads The role of the pattern is to increase the adhesion between the tire and the ground. You should choose tires with off-road treads, loose soil roads or other roads with poor road conditions. PILOTSPORT3 is a sporty pattern. Usually, the "comfortable pattern" in car tires The design pays more attention to reducing the noise generated by the blocks hitting the road surface.
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Apr 04,2023

How do solid tire manufacturers judge tire service life and wear?

How do solid tire manufacturers judge tire service life and wear?Generally speaking, the service life of tires in normal use is 4 to 5 years. After 5 years, even if the wear of the tread pattern is small, it should be replaced, because the rubber of the tread will age due to time, and many small cracks are caused. Causes of blowouts.However, the relevant state departments have not yet made special regulations on the shelf life of tires, because the service life of tires will vary depending on the tire rubber formula, vehicle environment and driving habits. So this requires us to pay more attention when driving, and there are signs of tire aging. For example, most of the aging parts of the tread appear from the edge of the bead or shoulder. Long-term exposure to the sun and rain will cause small cracks in circles on the rubber surface. These cracks indicate that the bearing capacity and quality of the tire at this time are not good. It has begun to decline, and it has to be replaced in advance in order to reduce the risk of tire blowout.In addition to aging, tires are also subject to natural wear and tear. Therefore, before the factory tires leave the factory, the wear limit will be marked on the sidewall to indicate the real-time wear status of this tire. For tires without wear marks, we can also use calipers to measure them. Generally, tires with a groove depth less than 1.6 mm cannot be used anymore, because the drainage performance and anti-puncture performance of the tire will be greatly reduced at this time. In addition, if a tire has been patched three or four times, we recommend that you switch the tire to a non-drive or rear wheel to reduce the risk of a flat tire.Of course, the life of the tire has a lot to do with whether it is used normally or not. First of all, we must ensure that the tires are always under normal tire pressure. Too low or too high tire pressure will bury hidden dangers to tire safety. What needs to be reminded is that don’t believe what your eyes see, because most cars now are equipped with tubeless low-pressure radial tires. Sometimes it looks a little flat from the outside, but it doesn’t mean that it must be deflated. Professional tire pressure Instruments are the way to check tire pressure. In addition, when testing the tire pressure, it must be under the condition of cold tires. If it is a hot tire measurement, the measured value must be subtracted by 0.3PA to be accurate.
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Mar 29,2023

What are the knowledge introductions of rubber raw materials for solid tires?

Rubber solid tires are often used in industrial vehicles. To be used under high loads, the rubber material is required to have sufficient pressure resistance and wear resistance, high enough modulus stress, high hardness and good wear resistance. So what kind of rubber material can make solid tires achieve the above performance? Let the solid tire manufacturers tell you the answer below.In conventional tire production, there are roughly two types of rubber materials. Natural rubber ensures the softness of tires at low temperatures. The disadvantage is that the raw material of natural rubber, that is, the latex sap obtained from rubber trees, is limited; and Synthetic rubber can be manufactured into various components, which can just meet the performance requirements of the finished tire, but the disadvantage is that the softness of the rubber at low temperature is reduced. The main purpose of adding carbon black is to increase the wear resistance of the tire and help to improve the rubber adhesion performance during vulcanization. In addition, there is also the assistance of the steel reinforcement ring for rigidity.The carcass of the solid tire is an all-rubber structure, and the main raw material is a special rubber material. Except for a small hollow in the middle, all of them are solid. The use of tires on vehicles uses the elasticity of the rubber carcass to weaken and absorb the impact that the wheels bear when they rotate.Solid tires completely eliminate the risk of tire blowouts during operation, and do not require routine maintenance, so they are widely used on high-load industrial vehicles. However, solid tires are very bulky, just like we wear hiking shoes when running, which weakens the flexibility, and the handling is not very good after being installed on the car, so it needs to be improved.In low-speed, high-load working environments, solid tires can completely replace pneumatic tires, and are superior in safety, reliability and stability.
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Mar 20,2023

What are the ways to dispose of waste solid tires?

Solid tires are a type of tires corresponding to pneumatic tires (hollow tires). Mining, engineering construction and cargo handling, etc. With the emerging development of my country's industry, industrial vehicles have increased significantly, and waste solid tires have also increased. Waste tires are harmful solid waste, known as "black pollution", which has caused great obstacles to the construction of ecological civilization in our country. Therefore, it is urgent to effectively deal with these waste tires.The existing waste tire treatment methods are:1) Overall regeneration. Tire retreading refers to a technological process in which old tires are partially repaired, processed, and re-applied with tread rubber, and then vulcanized to restore their use value. Waste tires can be used as ship buffers in wharves, as road protection fences or water and soil conservation fences, and as noise-absorbing partitions in buildings. This reuse method will neither cause waste of rubber resources nor cause re-pollution of the environment.2) Manufacture of reclaimed rubber. Reclaimed rubber refers to the rubber that can be re-vulcanized after the waste rubber is crushed, heated, mechanically treated and other physical and chemical processes are made to make its elastic state into a plastic and viscous rubber.3) Production of rubber powder. Rubber powder is used in the rubber industry, directly formed or combined with new rubber to make products; the other is used in modified asphalt pavement, modified asphalt to produce waterproof membranes, and used as a coating layer and protective layer in the construction industry wait. The crushing process for producing rubber powder includes ozone crushing, high-pressure blasting crushing, and low-temperature fine crushing.4) Pyrolysis and incineration. Pyrolysis is the use of external heat to open chemical chains and break down organic matter into valuable chemical products such as fuel gas, aromatic-rich oil, and carbon black. Tires have a high calorific value. Waste tires can be used as fuel in cement kilns and can be used to generate electricity.
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Mar 14,2023

Why do forklifts need solid tires?

It is strongly recommended that some forklifts must be equipped with rubber solid tires. For forklifts, solid tires offer the following four main advantages. Outstanding performance helps improve productivity:Because the solid tire carcass of the internal combustion forklift is made of all rubber, the puncture resistance of the tire can be eliminated to the greatest extent. The hazard of tire blowouts in industrial vehicles during load-bearing operations and in harsh operating environments. The solid tires of internal combustion forklifts have less load deformation and good driving stability. Due to their puncture and tear resistance, they do not need to be inflated, which avoids the drudgery of frequent tire changes and allows for better vehicle utilization. work efficiency. In low-speed, high-efficiency vehicles, the solid tires of internal combustion forklifts can completely replace pneumatic tires. Reasonable structural design ensures better tire performance:The solid tire adopts an advanced three-stage structure design, and three rubber materials ensure the integrity of the tire. The high-rigidity and high-strength base rubber and steel ring support can not only ensure the rigidity of the tire, but also ensure the airtightness of the tire and the rim, fundamentally eliminating the problem of solid tire slip ring.The highly elastic middle rubber can effectively absorb the vibration generated when the vehicle is running, making the driving comfortable and avoiding damage to the vehicle.The thickened tread rubber layer ensures the tire's tear resistance and wear resistance, and improves the service life of the solid tire. Advanced technology and formula design guarantee:Rubber compounds for solid tires for internal combustion forklifts are designed to maximize tire performance. In particular, the base rubber is made of imported high rigidity, low heat generation rubber material. The heat and temperature generated by the tire during operation is minimized, and the heat resistance of the tire is improved. Solve serious problems such as solid tire expansion slip ring and burst caused by temperature rise.The advanced design reduces the tire's rolling resistance. Tested by the National Construction Machinery Quality Supervision and Inspection Center, the rolling resistance coefficient of solid tires is equivalent to that of pneumatic tires, which solves the problem of increased fuel consumption caused by replacing solid tires. Avoid the risk of tire blowouts, loss of control, and promote safe production:When the vehicle is traveling at high speeds, such as when the tire hits potholes and other obstacles, it will cause the tire to form between the obstacle and the rim flange. Severe compression set can cause the carcass cords to break and compressed air to push the inside of the tire up from the dotted line to create a bulge. In more severe cases, it will cause the tire to collapse and rupture, and it will be completely flattened immediately, and the vehicle may lose control. theCompared with pneumatic tires, solid tires have the advantages of high safety, puncture resistance, tear resistance, wear resistance and long life. They are an ideal replacement for pneumatic tires in the industrial vehicle sector. Tires are an important part of forklifts and play a vital role in the safety of forklifts. Therefore, some forklifts must be equipped with solid rubber tires.
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