BPW220 brake shoe

Description

Main Characters of the Brake Shoe: 1. The Raw Materials of brake shoes use panels made by large steel mills in China, whose thickness is according with national standard. The Table Plate of the brake shoe adopts the criterion of Q**5B (Gr.D in US, SS**0 in Japan, Fe**0B in Germany), and the Web Plate adopts the criterion of Q**5B (***** in US, SM*0B in Japan, st***3 in Germany). 2. Inner R High Frequency Quenching has been introduced for the big and small hatch of brake shoe. The deepness of quenching is between 1.**2mm, and the rigidity is between HRC****5. 3. A Technique of Electrophoresis is adopted on the surface of brake shoe, therefore, the rigidity of paint surface and salt spray test has achieved international standard and had a higher quality than traditional spraying. 4. CO2 Protecting Welding is introduced and single point strength that examined by Zhejiang University Mechanics Research Institute is on average above *5Fs/KN.