Pick for tunnel boring machine ,bit for development machine

Specifications

A. Steel material.

We only use quality 42CrMo as steel body. This kind of steel of ultra high strength steel, 

intercritical quenching conditions can be obtained in martensite and a small amount of uniformly 

distributed fine ferrite, this organization under the premise of ensuring the strength of improved 

toughness. Has high wear resistance, high fatigue limit, strong toughness, which is to ensure the 

quality of cutting teeth of the basic factors.

                                Chemical  composition

B.Heat treatment Technology

In the light of bit alloy heads around the portion of generally wear,

 we developed the super abrasive cutting tooth, in this area have been adopted for ultra

 deep w alloying process, while the hardness is not greatly increased, but the infiltration 

of component greatly enhanced wear resistance, but still maintain toughness, and using

 high quality imported hard alloy head. After many trial effect of mine, has reached or even 

exceeded imports pick.

C.Braze welding technology

We use the alloy head outer circle after grinding, the tooth body alloy hole through the CNC 

lathe processing, strict tolerances to ensure weld full degree, either the alloy head or steel body,

 must be approved by the ultrasonic cleaning machine. The use of high-quality solder, guarantees higher welding strength.Configuration of advanced welding automation

 line equipment, so that product to guarantee the stability of the hardness and toughness of the premise,

 higher efficiency, to achieve a faster speed of delivery.

D.Hard alloy head selection

We produce high quality cutting tooth, adopt world famous brand the production of hard alloy.

 Its performance through the use of actual close to or even exceed the level of imports. 

Either the shearer or tunneling machine truncation tooth, whether soft or hard rock, can be configured 

to material.

E.Production process

Blanking→Forging→NC machining→Welding wear-resisting layer→Borehole→Brazing ( quenching )→Sand blasting→Inspection→The circlip→Anticorrosive treatment→Packing

   1.The customer service personnel 24 hours online, at any time to answer your questions. Our service more professional, to make it easier.
   2. Rich production experience, advanced equipment, standardization workshop, strict quality testing to make our products durable.
   3. Thousands of buyers witnessed our credibility, we sincerely cooperate with you.

1. Payment Term: 30% TT in advance+70% balance before shipment or total advance.
2. The remitter is responsible for the remittance charge.
3. The working time is about 20 days from receive payment.