Brake pad materials mainly experience metal, alloy and powder metallurgy etc.

With increasing car ownership in our country, the production of brake pad is also increasing year by year. Brake pads is the key components of train brake system. The quality of the high-speed rail brake pads is directly related to the train speed can slow down and stop in time, called "the patron saint of life".

With the rapid development of high-speed railway in China, its various performance requirements also corresponding increase, especially puts forward more strict requirements on braking performance. The braking power and speed of the train is cubic relationship, that is to say, the train speed double then braking power requires increased 8 times. High-speed train braking force mainly include electric braking force and friction, the friction braking is train safe parking final guarantee. Friction braking force comes from the friction between the brake disc and brake pads on the braking system. And in the braking system brake pads performance has very big affect on the train braking effect. Brake pad materials at home and abroad mainly experience metal, alloy and powder metallurgy etc.
In the world there is only a few countries such as Germany, France and Japan can produce high-speed train brake pad. Among them Germany Knorr company Monopolies more than 80% of the global high iron brake pads market. High-speed trains in China since its opening,  the brake pads of braking system relies on imports for long-term. Import brake pads has problems aush as high price, long cycle of supply, spare parts supply not in time and poor after-sales service. High-speed rail brake pads is n technology protection period before 2012, has been importing foreign products. In recent years the domestic represented by Tianyishangjia and PuRan private enterprises gradually enter the field of high-speed rail brake pads. Tianyishangjia in September 2013 got seven models 5 types of brake pads CRCC certificate of railways product, PuRan got CRCC certification in 2014. In 2015, BoShen tool has finished the high-speed train brakes 1:1 brake friction wear performance test.

China domestic powder metallurgy enterprises are expected to compete with international large enterprises

Powder metallurgy technology is a highly efficient, energy-saving new technology, occupies an important position in the economic development. In recent years, powder metallurgy products industry development is rapid, as technology changes and updated constantly, powder metallurgy industry development prospects is becoming vaster.
With the progress of society, the development of every industry achieved by leaps and bounds, while the largest power propel the development of the industry comes from the high-tech support. Powder metallurgy products, for example, although the powder metallurgy industry in the market has great potential for development, the application field is extremely broad. But these factors do not say powder metallurgy products can survive in the competition the worse and worse living environment. In numerous of powder metallurgy products, only with the high-end technology, comprehensive services, can firmly seize the user's eye, become the most popular powder metallurgy products in the market.

Powder metallurgy technology is a highly efficient, energy-saving new technology, occupies an important position in the economic development. In recent years, powder metallurgy products industry development is rapid, as technology changes and updated constantly, powder metallurgy industry development prospects is becoming vaster.
With the progress of society, the development of every industry achieved by leaps and bounds, while the largest power propel the development of the industry comes from the high-tech support. Powder metallurgy products, for example, although the powder metallurgy industry in the market has great potential for development, the application field is extremely broad. But these factors do not say powder metallurgy products can survive in the competition the worse and worse living environment. In numerous of powder metallurgy products, only with the high-end technology, comprehensive services, can firmly seize the user's eye, become the most popular powder metallurgy products in the market.

Reduced iron powder has become irreplaceable high-grade mate

Reduced iron powder is the foundation of advanced powder metallurgy and soft magnetic induction device materials. The products because of the high machinability, can be made into all kinds of thin, special shape components, with a strong impact resistance, corrosion resistance, wear resistance and high strength characteristics, widely used in automobiles, machinery, ships, locomotives, etc. Is a high grade material cannot be replaced by the iron and steel made on pure melting.
In addition in the transformer core, electric induction device, high quality electrode, xerox, chemical industry, medical and food preservation is applied widely. With the development of science and technology, the application areas of high purity iron powder will be more and more widely, using amount is becoming bigger and bigger.
According to analysis, the initial raw material of reduced iron powder is iron oxide, mainly exists in the erroferric(Fe3O4) oxide. Due to the original hydrogen reduction effect is not very good, so change to tunnel kiln using carbon as reductant to restore the product, the reduction efficiency is relatively high. So using carbon as the reducing agent in once reduction in deoxidization, the method is widely used.
Thus, powder metallurgy with reduced iron powder production process is also a kind of once reduction, so generally choose carbon namely coke as a reducing agent for reduction, at the end get the semi-finished product sponge iron. Form replacement sponge copper iron powder, of course, this is not the final product, but also on the broken again after processing to the secondary reduction, can use hydrogen as a reducing agent for reduction at this moment, to get the product we want.