头部左侧-邮箱
-
2021-08-06Hangzhou HLK Advanced Materials Co., Ltd.: differences and selection of motorcycle brake pads (II)
C. Relationship between friction coefficient and working temperature
In addition to the friction coefficient, the effective operating temperature of the brake pad is also very important. The various metals and compounds used to make brake pads will only be effective at a certain temperature. To widen the effective working temperature of the brake pad, the manufacturer adds different metals or other synthetic materials to the brake pad formula, and uses high temperature and high pressure to integrate various materials into a synthetic material. When designing the characteristics of brake pads, manufacturers should consider the other four elements in addition to the friction coefficient and operating temperature. Therefore, there is no brake pad compound in the world that can get full marks in the range of six items. Also, in the real world, no motorcycle can contain all the characteristics, so manufacturers prepare corresponding products according to the needs of different motorcycles< br /> Differences and selection of motorcycle brake pads
There are great differences in the force used by motorcycles, high-performance Road sports cars and racing cars in biaohuaxing street. It is also inappropriate to use racing pads for street cars or brake pads for street cars. The characteristics of street and racing brake pads lie in the temperature difference during braking. The car needs to constantly exert 100% braking power at extremely high speed, and the range from kinetic energy to thermal energy is unimaginable for street cars. For ordinary street braking systems, if the brakes are applied continuously for about ten times, the brake pads will begin to "heat decay". Therefore, the brake skin for racing must still maintain a high-efficiency friction coefficient at high temperature, so the friction coefficient will be poor at normal temperature< br /> The performance of the brake pads used in racing cars before 250 ℃ is much worse than that used in sports cars. However, when the temperature is between 300 and 500 degrees, the friction coefficient of the force skin for racing cars is much better than that for sports cars
D. Is the friction coefficient important, or is the handling important? In the real world, there are more than three types of brake pads? It should also be noted that when the brake pad operation is involved, the interference to the control should be minimized, that is, the feel should be gradual in order to facilitate the control. Brake pads with high friction coefficient usually have great interference and are unfavorable for handling. Therefore, for people who pay attention to forced hand control or need to compete in wetlands, they will choose brake pads with low friction coefficient, such as racing specification 1 shown in the above figure to increase hand control< br /> Hangzhou hanleke New Material Technology Co., Ltd. mainly produces special friction materials and components such as lawn mower and chain saw gasoline engine clutch, motorcycle clutch friction plate, motorcycle brake shoe block and disc brake plate, construction machinery brake plate, motor friction plate, electric hoist and so on. If you need anything, please contact us at 18069882783 -
2021-08-05Hangzhou HLK Advanced Materials Co., Ltd.: differences and selection of motorcycle brake pads (I)
The most cost you can't save by riding a motorcycle is the replacement of tires and the maintenance of brake pads of the brake system. What shock absorber, titanium ruler and exhaust pipe are just icing on the cake. If you don't replace it when it's due, you can drive a little slower at best. However, tires and braking systems are important factors related to life safety
A. How to evaluate the quality of brake pads? The quality of brake pads (brake pads) is not simply selected for racing cars, it is better to be so simple. We want to see: 1) what is the friction coefficient of the brake pad? 2) How wide is the effective operating temperature of the brake pad? 3) How fast does the brake pad wear out? 4) How loud is the noise when braking? 5) How much force powder does the force pad release when braking? 6) Is the friction provided by the brake pads linear? Easy to master? The higher the friction coefficient, the higher the work efficiency of the brake pad. However, choosing brake pads for your car does not mean that the higher it is, the better it suits your needs. The weight and speed of different vehicles are different. For vehicles with low speed and light body, the force skin with high friction coefficient will destroy the handling and affect the driving feeling& nbsp;< br />
B. What is the coefficient of friction? The friction coefficient (U) is a quantitative simplification to describe the friction resistance. One of the simplest calculation methods is to divide the frictional resistance (FR) by the force (FN) required to counteract the friction and successfully pull the animal part. The friction coefficient is calculated as u = FR / FN. Another measurement method is to measure the gravity, that is, the weight (W) of the object: u = FR / W. For example, in the left figure, the weight of the book is w, divided by the force required to pull the book on the desktop, and the weight measured by the slingshot pound is the friction coefficient between the book and the desktop
Based on different conditions, the conditions constituting the friction resistance (FR) and the force (FN) breaking the friction resistance are different, so the friction coefficient is divided into at least four different versions. Among them, the common ones are static coefficient of friction and dynamic coefficient of friction, and the ones applied to motorcycle braking system are, of course, dynamic coefficient of friction& nbsp;< br />
Hangzhou hanleke New Material Technology Co., Ltd. mainly produces special friction materials and components such as lawn mower and chain saw gasoline engine clutch, motorcycle clutch friction plate, motorcycle brake shoe block and disc brake plate, construction machinery brake plate, motor friction plate, electric hoist and so on. If you need anything, please contact us at 18069882783 -
2021-07-31Hangzhou HLK Advanced Materials Co., Ltd.: requirements of friction materials for fiber reinforced materials used
Fiber reinforced materials constitute the base material of friction materials, which endow friction products with sufficient mechanical strength to withstand the load force of grinding and riveting of friction plates in the production process, as well as the impact force, shear force and pressure caused by braking and transmission in the use process
China's relevant standards and automobile manufacturers put forward corresponding mechanical strength requirements for friction plates according to the actual working conditions of friction plates. Such as impact strength, flexural strength, compressive strength, shear strength, etc. In order to meet these strong performance requirements, it is necessary to select appropriate fiber varieties to increase and meet the strength performance
(1) Good enhancement effect.
(2) Good heat resistance. No fusing, carbonization and thermal decomposition will occur under friction working temperature.
(3) It has a basic friction coefficient.
(4) The hardness should not be too high to avoid braking noise and damage to the brake disc or drum.
(5) The process has good operability
Hangzhou hanleke New Material Technology Co., Ltd. mainly produces special friction materials and components such as lawn mower and chain saw gasoline engine clutch, motorcycle clutch friction plate, motorcycle brake shoe block and disc brake plate, construction machinery brake plate, motor friction plate, electric hoist and so on. To meet the needs of new and old customers with the best product quality, the most affordable product price, the most sincere service attitude and the most honest business philosophy! If you need anything, please contact us at 18069882783
底部-联系我们
FAX:+86-571-61103562
E-mail:info@hzhualong.com