News- Zhejiang Kunrong Rubber Technology Co., Ltd.

Sep 26,2022

Safe use of solid rubber tires!

Solid rubber tires have high elasticity, strong heat dissipation, good wear resistance, better stability, larger (smooth) contact area with the ground, and strong grip. Solid rubber tires have a long service life, low deformation rate, less impact on forklifts, lower maintenance costs for forklifts, and increased driver comfort.Because the solid rubber 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 the harsh working environment is fundamentally eliminated. The load of solid tires is small, the deformation is small, and the running stability is good. Because of its puncture resistance and tear resistance, it does not need to be inflated. It avoids the heavy labor of frequent tire repair and tire replacement, and can improve the utilization rate and work efficiency of the vehicle. In vehicles, solid rubber tires can completely replace pneumatic tires.
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Sep 19,2022

Why are polyurethane tires called green tires?

Tires play a very important role in various parts of automobiles, and have a great impact on various driving performances of automobiles. The use of polyurethane tires is becoming more and more popular. Today, Zhejiang Kunrong Rubber Technology Co., Ltd will introduce to you why polyurethane tires are called green tires. Rubber tires are exposed to short service life, poor wear resistance and tear strength during use, especially truck tires, which often lead to tire blowouts due to their limited load capacity.In order to make up for the shortcomings of rubber tires, polyurethane tires are produced. The reason why polyurethane tires can make up for the shortcomings of rubber tires is that polyurethane elastomers are ideal materials for green tires.In terms of its Young's modulus, polyurethane elastomer is a polymer composite material with high hardness of plastic and high elasticity of rubber, mainly including polyurethane compound rubber, polyurethane casting rubber, polyurethane water latex and polyurethane heat. plastic. Compared with rubber, polyurethane elastomers have superior wear resistance, higher tear strength and elongation and a wide range of hardness. In particular, the cast polyurethane elastomer is the most wear-resistant elastomer at present. It has the advantages of high wear resistance, colorability, high cutting resistance, excellent oil resistance and chemical resistance, and is non-toxic to the human body. It is not necessary to add carbon black, so polyurethane is an ideal material for making tire treads.In addition, polyurethane tires have good vibration absorption and shock absorption effects, very large load capacity, and extremely ideal resistance to oil and other chemicals. Because polyurethane elastomers have special physical and mechanical properties that other polymers do not have, they are widely used in many aspects such as national defense, light textiles, transportation, oil fields, mining, machinery, construction, and medical care.
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Sep 15,2022

How to choose the right type of forklift tire?

How to choose the right type of forklift tire? The following are some suggestions of Zhejiang Kunrong Rubber Technology Co., Ltd: The forklift tire factory recommends that you choose suitable forklift tires for the working conditions and environment.You can choose the appropriate tire type according to different working conditions and use environments;1) For example, when working outdoors, the road conditions are good, and the working distance is long (500 meters or more), it is recommended that you choose pneumatic tires. Although solid tires can basically avoid the safety hazards caused by pneumatic tire blowouts, it is difficult to withstand long distances. Internal heat generation from distance, uninterrupted operation;2) In more cases, it is recommended to use solid tires. In addition to the need for air pressure maintenance of pneumatic tires, solid tires do not have the safety hazard caused by puncture of pneumatic tires. Good solid tires are cost-effective and maintenance-free. It is much better than pneumatic tires in many aspects, such as longer replacement cycle; under the working conditions of moderate working strength, distance and load, solid tires with side holes with higher shock absorption effect are better considering safety and safety. A good choice for comfort;3) For forklifts that carry out handling operations in a clean room, it is recommended that you choose light-colored solid tires without imprints, which can greatly reduce the obvious black marks left on the ground by the forklift during load transportation, especially when turning, emergency stop and emergency braking;4) In the working environment with hazardous chemicals or the risk of dust explosion, it is extremely important to choose run-flat tires with special formulations. The static electricity generated when the vehicle is running can be directed to the ground in time to avoid potential safety hazards caused by the accumulation of static electricity. When choosing run-flat tires, Shandong Forklift Tire Factory recommends that you select and assemble under the guidance of professionals.
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Sep 05,2022

What is the function of industrial solid tires?

Features of industrial solid tires:Tires are one of the most important car parts, just like the feet of a car. And all tires must ensure a balance of these functions. Only by fully understanding the tires and using them properly can we make them perform well.1. Load capacityFunction of vehicle weight load, body and occupant, and cargo load2. Traction performance and braking performanceThe transmission of power, the transmission of braking to the road surface, the performance of driving, deceleration and braking are effectively transmitted to the road surface.3. Comfortable rideThe function of buffering the bumps caused by the unevenness of the road surface during driving.4. Safety of controlDirection change and maintenanceThe function of correctly changing directions or maintaining a straight line while driving.
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Aug 31,2022

How to choose solid tire rims?

Generally, when purchasing a solid tire rim, the first thing to look at is its related parameters. The parameters of the rim mainly include: diameter, width, PCD and hole position, offset distance, and central hole 5 factors:1. Diameter: The size design of the steel ring is actually to adjust the diameter of the steel ring. We can often hear the Chinese people say 15-inch steel ring and 16-inch steel ring technology. Among them, 15 and 16 inches refer to is the size (diameter) of the steel ring. Large rims and tires provide good visual tension and increase vehicle stability, but have other problems with increased fuel consumption.2. The width of the rim is what we commonly call the J value. The width of the rim will directly affect the choice of tire. For tires of the same size, the J value is different, and the aspect ratio and width of the selected tires are also different.3. The professional name of PCD is pitch diameter, which refers to the diameter between the fixing bolts in the center of the rim. Taking 5*113 as an example, it means that the PCD of this rim in China is 113mm, and there are 5 bolts in the hole.4. Bias: English is Offit, commonly known as ET value, the edge distance between the installation surface and the center line, this parameter can usually be found on the back of the edge.The ET value is positive for general vehicle management and negative for a few corporate vehicles and some jeeps.5. The big hole is in the middle of the rim. Note that the size of the center hole is the correct data measured from the back.The central hole is used to connect the fixed network with the vehicle, which is due to the position of the rim concentric with the rim through the center.6. You can directly tell the tire manufacturer the size of the tire you use. If you don't know how to measure it, we will have a special technician to measure it to ensure that you use the appropriate rim.
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Aug 22,2022

What are the precautions for solid tire installation?

Zhejiang Kunrong Rubber Technology Co., Ltd. will talk about the installation precautions of solid tires. Pneumatic tire rims solid tires and corresponding pneumatic tire rims can be used interchangeably. However, the loading and unloading of solid tire rims can only be completed with auxiliary tools (tools) on the press. In order to ensure the safety and accuracy of the installation process, the following rules should be followed:1. Inspection of tires and rimsFirst, check the compatibility of the tire and the rim, that is, whether the specification and model of the tire to be installed are the same as the rim model. The rim width used by tires of the same specification is different, please confirm first when installing. The inspection of the rim includes whether the rim is defective and whether there are burrs. If there is any burr, it should be smoothed first, otherwise it is easy to damage the inside of the tire hub, which will affect the installation and use.2. In order to ensure that the tire can be smoothly installed in place and reduce the friction between the tire and the rim, during installation, the inner surface of the tire hub and the outer surface of the rim should be sprayed and coated with lubricant. The lubricant can be selected from commonly used soapy water, washing powder water, etc. Conditional lubricants for tires can be used, but greases and other common industrial lubricants must not be used, because they will swell the rubber and damage the tires.3. When the tire is placed on the rim, the head should be flat and should not be deflected, otherwise it will be difficult to install, and it will sway from side to side during use. The rim must be installed in place and the bolts must be tightened, otherwise the slip ring or the separation of the tire and rim will cause danger.4. According to the requirements of the ETRTOEDI standard, the tires must be concentric when they are installed on the vehicle. Tires of different specifications and different wear and tear cannot be installed on the same vehicle or on the same axle, and cannot be mixed with pneumatic tires, otherwise it is easy to cause personal and equipment accidents.
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Aug 15,2022

Why do forklifts use solid tires?

1. 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 in the process of load-bearing operation of industrial vehicles and in harsh working environments is fundamentally eliminated. Solid tires have small load-deformation variables and good running stability. Because of their puncture resistance and tear resistance, they do not need to be inflated, which avoids the heavy labor of frequent tire repair and tire replacement, and can improve the utilization rate and work efficiency of the vehicle. In vehicles, solid tires can completely replace pneumatic tires.2. Reasonable structural design to ensure that the tire has good performanceThe solid tire adopts an advanced three-stage structure design, and the three kinds of rubber compounds ensure the overall performance of the tire. The high-rigidity, high-strength base rubber and steel ring support not only ensure the stiffness of the tire, but also ensure the tightness of the tire and the rim, which fundamentally eliminates the problem of the sliding ring of the solid tire; the high-elasticity intermediate rubber effectively It absorbs the vibration generated when the vehicle is running, has a comfortable driving experience, and avoids damage to the vehicle at the same time; the thick tread rubber layer ensures the tear resistance and wear resistance of the tire and improves the service life of the solid tire.3. Advanced technology and formula designThe production of solid tires has advanced technology with more than half a century of production history and experience, which maximizes the performance of tires in the design of rubber formulations. The heat generation and temperature rise and fall during operation are minimized, and the heat resistance of the tire is improved at the same time, thus solving the serious problems such as swelling, slip ring, and burst caused by the temperature rise of the solid tire.The advanced formula design reduces the rolling resistance of the tire. 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 the replacement of solid tires.4. Avoid the danger of vehicle tire burst out of controlPneumatic rim-type solid tires are solid tires that can be used interchangeably with pneumatic tires of the same specification. When the vehicle is running at high speed, if the tire hits potholes and other obstacles, the tire will be severely squeezed and deformed between the obstacle and the rim flange, which can cause the carcass cord to break, and the compressed air inside the tire will be broken. The line is jacked up to form a bulge.If it is more serious, it will cause the tire to crash and rupture, and it will be completely deflated in an instant, and there may be a danger of losing control of the vehicle. Compared with pneumatic tires, it has the advantages of high safety, puncture resistance, tear resistance, wear resistance and long life. It is an ideal replacement product for pneumatic tires in the field of industrial vehicles. With the development of industrial vehicles and the improvement of solid tire production technology, this kind of tire is more and more widely used.
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Aug 08,2022

What are the common quality problems of solid tires?

Common quality problems of solid tires:1. Delamination: There are circumferential cracks or delaminations between the rubbers, and there are many inflatables.reason:(1) The rubber compound contains moisture and sundries, especially the viscose is polluted by rainwater and sundries during storage and transportation.(2) Poor heat preservation of the embryo and the temperature fluctuation of the vulcanizing machine cause insufficient sulfur.(3) The embryo is formed too early and the parking time is too long, resulting in the self-sulfurization of the rubber in the center of the embryo.(4) Overload and overspeed operation during use.2. Off the circlereason:(1) The viscosity of the adhesive does not meet the technological requirements.(2) The surface is contaminated after applying the adhesive.(3) Poor heat preservation of the embryo and the temperature fluctuation of the vulcanizing machine cause insufficient sulfur.(4) Overload and overspeed operation during use.3. Block drop: The rubber surface is partially broken offreason:(1) The mold was not opened in time after the vulcanization time, resulting in over-sulfur and aging.(2) The rubber compound is mixed and heated unevenly.(3) Poor heat preservation of the embryo and the temperature fluctuation of the vulcanizing machine cause insufficient sulfur.(4) The use environment is poor and it is cut by external force.(5) The use environment is corroded by chemicals.4. Radial cracks: rubber cracks along the diameter direction, mostly in the white press-fit typereason:(1) The tear strength and aging resistance of the rubber compound are not enough.(2) The mold is not opened in time after the vulcanization time, resulting in over-sulfur and aging.(3) Overload.5. Discoloration: The color of non-marked tires changes, mostly in white inflatable tiresreason:(1) The overall discoloration is mainly because the white rubber itself contains chemical components that change color after oxidation.(2) The discoloration in the middle of the sidewall is mainly due to the wrong use of fetal heart rubber, or the use of polluting antioxidants during mixing.6. Broken edge: simple tire convex edge fracturereason:(1) The root of the convex edge is damaged during production.(2) The strength and hardness of the rubber at the raised edge are not enough.(3) Improper operation when installing the rim.7. Slip: The tire diameter is too large or the rim diameter is too small, causing the relative displacement of the tire and the rim.8. Desoldering: the weld seam of the press-fit solid tire steel ring is desoldered, and the inflatable solid tire steel ring joint is broken.reason:(1) The welding strength of the joint is insufficient or there is virtual welding.(2) The rim and tire are not placed flat during installation.(3) The arrangement of the inflatable steel bars is dislocated.9. Middle cracks: cracks occur from the clamping seam after use, mostly in small sizes.10. Eccentric wear: The left and right sides of the running surface are not uniformly worn after use.reason:(1) The hardness of the simple tire flange is not enough.(2) The inner part of the steel ring is broken.(3) There is a problem with the axle.
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Aug 01,2022

What are the reasons why solid tires are rare?

Everyone is saying that you should regularly check the tires, tire pressure, tire temperature, air leakage, etc., and try to avoid tire blowouts. Then someone asked: Don't you need to worry about these if you make it directly? Now let's talk about why the tires don't need to be solid.1. Features of solid tiresThe biggest advantage of solid tires is that they are wear-resistant, so you don't have to worry about tire pressure and air leakage. Another point is that solid tires can carry more load than pneumatic tires. Finally, in terms of the aging speed of rubber, solid tires must last longer than radial tires, which can meet the long-term use needs of vehicles working in harsh environments.2. Reasons why solid tires are rareBut why did radial tires replace solid tires? The previous rubber tires were indeed solid, but they were not comfortable in use. As the saying goes, a shoe weighs one kilogram and a person weighs five kilograms. The same is true for tires. Solid tires are definitely heavier than the current radial tires, which will cost more. Oil. Furthermore, the solid tires are not comfortable enough, the bumps during driving are more intense, and the cost is higher.3. UnstableWhen the tire is running at high speed, it is too late to restore the deformation, and it is possible to generate a standing wave on the carcass, which will cause the tire temperature to rise sharply and cause the tire to burst. Solid tires are more prone to this phenomenon, and there have been cases of tire chipping in tests using solid tires.In addition, the solid tire increases the unsprung mass. The larger the suspension mass, the slower the suspension system responds to changes in the road surface, which has a great impact on the dynamic performance of the vehicle.4. Application of solid tiresIn fact, solid tires have not completely disappeared. For example, the tires of some forklifts and other models, the lift wheels on the plane use solid tires.
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Jul 28,2022

What are the common problems with solid tires?

Nowadays, there are many kinds of car tires. The most widely used one is pneumatic tires. In fact, there are many kinds of tires besides pneumatic tires. Solid tires are one of them. Maybe people rarely see solid tires, but they are all around us. Today, Zhejiang Kunrong Rubber Technology Co., Ltd will introduce you to solid tires.Introduction to solid tiresSolid tire is an industrial tire suitable for low-speed, high-load running vehicles. In addition to the characteristics of pneumatic tires, it also has the advantages of low starting resistance, simple structure, convenient use and maintenance, small maintenance workload, no need for inflation, no Air leaks and punctures. Therefore, the safety, durability, puncture resistance, tear resistance and economy of solid tires are better.Application of solid tiresSolid tires are mainly used for industrial vehicles such as low-speed and high-load hoisting vehicles, traction vehicles and flatbed trucks, such as various forklifts, port and airport trailers, etc. Military, construction machinery and other fields, but also widely used in medicine, food, paper, textile, electronics and other fields.1. Pneumatic tire rim solid tireSolid tires mounted on rims for pneumatic tires.2. Steel rim press-fit solid tireTires that are vulcanized on endless metal belts and then pressed onto matching wheels.3. Bonded solid tireTires vulcanized directly on the running wheel.4. Solid tire without imprint (green tire)Solid tires that do not leave marks on the ground, especially brake marks, during use.
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Jul 19,2022

What should be paid attention to when pressing solid tires?

Solid tires and corresponding tire rims are interchangeable and used during inflation. However, the loading and unloading of solid tire rims needs to be completed with auxiliary teaching tools (tools) on the working press. In order to ensure the safety and accuracy of the system installation process, the following rules should be followed:1. Choose the right tire pressAt present, the commonly used tire presses in my country are 120 tons, 200 tons, 250 tons, 300 tons, 350 tons, etc. A suitable tire press should be selected according to the students' own needs.2. Inspection of tires and rimsCheck the fit of the tire and the rim, the same size tire, the width of the rim is different. Please confirm when installing. The inspection of the rim mainly includes whether the rim is defective and whether there is burr. If there are burrs, it needs to be smoothed, otherwise the hub will be easily damaged, which will affect the installation and use.3. In order to ensure the smooth installation of Chinese tires and reduce friction with the rim, during installation, the inside of the tire's hub and the outer surface of the rim should be sprayed and coated with lubricant. The lubricant can be selected from some commonly used soapy water, Washing powder, water, etc., can be used as a special mechanical lubricant for tire companies if conditions permit, but not necessarily lubricating oils commonly used in industrial technologies such as greases, etc., because they will swell rubber and damage tires.4. When the tire is placed on the rim, its head should be flat and should not be skewed, otherwise it will be difficult to install and swing left and right during use. The rim must be in place and the bolts must be tightened, otherwise there is a danger of slipping easily or separating the rim.5. According to the standard requirements, when the tires are loaded, the same axles must be used with the same specifications of the same manufacturer, and cannot be mixed with pneumatic tires.
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Jul 12,2022

What is the role of improving the performance of forklift solid tires?

Today, let's explain the development of forklift solid tires in detail:Economical; deep tread pattern design greatly improves tire usage and prolongs usage time. It will not break the tire, avoid the waste of tire repair fee and puncture, and save the cost.Safety: Good high temperature resistance and low heat generation make the tires still have good safety in harsh environments. Low compression deformation, high recovery characteristics, the tire still maintains good operating performance under high load conditions. It is composed of low heat generation and cutting-resistant materials, and it still has better load capacity under long-distance and long-term construction.In addition, the inside of the carcass is completely filled with elastic colloid, no matter where it is used, there is no tire breakage or puncture. And there are equal and the same colloidal coordination, which can completely avoid the above situation, and can effectively increase the safety requirements no matter what the operation is.The solid tire adopts the front three-stage structure design, and the three kinds of rubber materials respectively ensure the overall performance of the tire. The high-rigidity and high-strength base rubber and steel ring support not only ensure the stiffness of the tire, but also ensure the tightness of the tire and the rim, which fundamentally eliminates the sliding ring problem of solid tires.Timeliness: Forklift solid tires have higher load performance, which can reduce the cross-sectional area of the tire and the contact surface, greatly reduce tire wear, increase vehicle flexibility, and improve work efficiency. The characteristic of not breaking the tire can avoid the idle time wasted by vehicles and personnel when the tire is broken or repairing the tire, and increase the working energy.
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