①Inner R
High Frequency Quencher has been introduced for the hatch of big
and small brake shoes.
②A technique
of electrophoresis is adopted on the surface of brake shoes,
therefore ,the rigidity of paint surface and salt spray test has
achieved international standard and had a higher quality than
traditional spraying.
③The raw
materials of brake shoes use panel made by large steel mills in
China, whose thickness is according with national standard .The
panel of brake shoes adopt the criterion of Q**5B(Gr.D in
US,SS**0 inJapan,Fe**0B in Germany, ),and strength reinforced
plate Q**5B(Gr.E in US,SM*0B inJapan,St***3 in Germany).
④CO2protecting welding is introduced and single
point strength that examined by Zhejiang University Mechanics
Research Institute is on average above *5 Fs/KN.
