1, the outer edge of the wear phenomenon: If you observe the direction of travel, there is a greater wear on the outer edge of the tire, Diagnosis: The tire is often under-inflated, ie the pressure is not enough.
Recommendation: Examine tire pressure several times. If possible, press the "highway" standard to inflate, that is, add 30,000 Pas more than normal. Furthermore, it is generally believed that since the tire is under-inflated, it is conducive to driving in snow and sand, as well as on wet ground. It should be noted that under-inflated tires are very unfavorable for rainy days and the grip will be significantly reduced.
2. The rubber block of the tread has been cut off. Diagnosis: When driving on the road, sharp foreign objects, including debris, may chip off the rubber block of the tread and may damage the steel belt or carcass cord fabric.
Recommendation: Avoid rolling on foreign objects and debris while driving on the road.
3, convex and corrugated wear phenomena: the tire on both sides of the land was convex wear, but also around the tire was corrugated wear,
Diagnosis: Parts such as shock absorbers, bearings, and ball joints of the car wear more seriously.
Recommendation: Because of the high cost of replacing new tires, it is recommended that you check the wear of the suspension system and replace worn parts before replacing the tire. Otherwise, even if you change the tires will not help.
4. Uniform wear on the surface Uniform wear of the tire is normal. Each department will have a corresponding performance. Once the pattern has dried. Explain that the life of the tire is exhausted. It must be replaced. In addition, the pattern also has the effect of dissipating water in the road area, and is therefore an important part of maintaining the car's grip.
Solution: Tires must not be made on their own. If the wear has reached the standard depth of the tire tread (usually 1.6mm width is greater than 175mm tires 2mm), it will be replaced. Of course, there will be differences in the degree of wear. But notice. The difference in wear of different tyres on the same axle must not exceed 5 mm.
5, the central part of the wear phenomenon: the central area of ​​the tire part of the situation of serious wear and tear diagnosis: This shows that the tire is often in over-inflated state. This is also not conducive to the maintenance of the tire, but accelerated the tire's wear.
Suggestions: First, be sure to check if the pressure gauge is accurate and adjust the pressure. Notice. Only when driving at high speed or on a heavy load. It is necessary to inflate the tire too much, but it is not necessary under normal conditions.
6, tire side crack diagnosis: due to poor maintenance. Or driving on a rocky road and on a construction site, so that hard objects come in contact with the tires, causing damage to the inner layers of the tires under heavy pressure.
Suggestion: If the repair fee is not too expensive. Repair is better, or tires will have to be replaced. Although tires now use new technologies, they are also delicate and need to be properly maintained.
7. "Dark injury" in the tire
Diagnosis: For example, after collision of a vehicle with a hard object (eg, hitting the edge of a walkway). Or after abortion, the tire rubber layer will have serious scratches, affecting the degree of sealing.
Recommendation: In this case. Tire leaks and breaks. If the wound is small, it can be repaired, and it can be used on a regular basis. However, if you want to travel long distances, you must replace it immediately.
8, tire bubbling phenomenon: tire bulging even missing glue, leakage situation.
Diagnosis: Caused by fracture caused by overstretching of the carcass cords. Suggestion: Do not think that it is possible to fix things and patching rubber does not last long. Especially when driving long distances, it is best to change tires in time.
9, tire inside wear phenomenon: tire inside wear, the outer edge of the burr-like.
Diagnosis: It is common for some old cars to have a bad suspension system, causing the entire vehicle body to sink deep. This shows that the deformation of the tire and the symmetry of the two tires have been affected.
Suggestion: If there are conditions, it is best to replace the shock absorbers, ball joints and other accessories. However, if the cost is too high, consider asking a professional mechanic to adjust the front axle and the tire angle.
10. Partial wear of the tire If there is only a large area of ​​wear on the surface of the tire, it means that it was caused by the wheel that was not in the emergency brake. If there are two pieces of wear on the front and rear wheels, it means there is a problem with the drum brake.
Solution: In this case the tire must be replaced anyway. To cope with emergencies, of course, old tires can be temporarily transferred to the rear wheels to ensure safety.
Advice: When the vehicle owner is driving, he must avoid emergency braking.
Advanced Plastic is a polymer material which has a higher comprehensive performance and can be use in long-term temperature above 150 ℃.It is mainly used in the field of high technology .So we also call it as the high performance engineering plastics or heat resistant engineering plastics.
This kind of material has excellent characteristics of light weight, high strength , good heat resistance and others and its application is from the original national defense and aerospace to the field of car, equipment, high-end consumer goods and many civilian areas.
There are many kinds of Advanced Plastic produced by Dongguan Noegem Plastic Product Co.,Ltd .
1. Production:
Polyphenylene sulfide plastic sheet (PPS plastic sheet),
PPS plastic which also called Polyphenylene sulfide.On the primary key is extremely dense and sulfur atoms of benzene ring, thermoplastic resin is high rigidity, high crystallinity, have higher strength and modulus, products can be used in the 200 ~ 224 ℃, 250 ℃ under the main performance.
2. Production:
Polyether imide plastic sheet (PEI plastic sheet),
Antistatic polyether imide plastic sheet (ESD PEI plastic sheet),
Conductive polyether imide plastic sheet (CON PEI plastic sheet),
Polyether imide plastic rod (PEI plastic rod),
Antistatic polyether imide plastic rod(ESD PEI plastic rod),
Conductive polyether imide plastic rod (CON PEI plastic rod),
PEI plastic is characterized by high intensity, high rigidity, abrasion resistance and dimension stability.PEI plastic is a transparent solid of amber, which has inherent flame retardancy and low smoke intensity without adding any additives. The oxygen index is 47% and the combustion level is ul94-v-0.
PEI plastic is 1.28 ~ 1.42 g/cm3 density, glass transition temperature is 215 ℃, thermal deformation temperature of 198 ~ 208 ℃, can use for a long time under 160 ~ 180 ℃, allows intermittent maximum temperature of 200 ℃
PEI plastic has excellent mechanical strength, electric insulation, radiation resistance, high and low temperature resistance and fatigue resistance and molding processability;The addition of Glass Fiber, carbon fiber or other filler can enhance the modification purpose.
3. Production:
Polyether ether ketone plastic sheet (PEEK plastic sheet),
Antistatic polyether ether ketone plastic sheet (ESD PEEK plastic sheet),
Conductive polyether ether ketone plastic sheet (CON PEEK plastic sheet),
Polyether ether ketone plastic rod(PEEK plastic rod),
Antistatic polyether ether ketone plastic rod(ESD PEEK plastic rod),
Conductive polyether ether ketone plastic rod (CON PEEK plastic rod),
Polyetheretherketone (PEEK) plastic is a kind of excellent performance of special engineering plastics, has more significant advantages compared with other special engineering plastics..Can be used for high-end technology such as mechanical, nuclear engineering and aviation.
Advantage :
1)Excellent chemical resistance and hydrolysis resistance
2)Excellent physical and mechanical properties
3)Resistance to high temperature is 260 degrees,
4) light and good dimensional stability
5 )excellent flame retardancy
6)Good electrical insulation and electrical stability
7 )it can be mixed, easy to process composite
8)Good self-lubrication
4. Production:
polyphenyl ether plastic sheet(PPO plastic sheet ).
PPO plastic is a special kind of Engineering Plastic, which has many features that other engineering plastics do not have:
1. Transparency: PPO plastic is one of the few transparent plastics;
2. Non-toxic: PPO plastic itself is less toxic and more suitable for food and medical applications;
3. Low temperature resistance: the low temperature of the PPO in the low temperature of minus 170 degrees centigrade, which is a lot of engineering plastic;
4. Low gravity: 1.08 g/cubic cm is slightly more dense than water;
Main features of Advanced Plastic
Heat temperature of 150 ~ 300 ℃
Advantages :
1).Good in heat resistance,
2).Good chemical resistance and radiation performance,
3).Good flame retardancy
4).Good stiffness, strength, toughness, creep, abrasion and other comprehensive mechanical properties.
Application: space aviation, defense military industry, nuclear power, electronics, transportation, machinery manufacturing, medical devices and other civil fields.
Advanced Plastics (160-220℃)
Advanced Plastic,Advanced Technology Plastic,Excellent Quality Advanced Plastic
Dongguan Noegem Plastic Products Co.,Ltd , http://www.noegempLastic.com