Wear-resistant steel bar

Technical parameters of Shandong Dongxin wear resistant grinding steel bar

1, diameter: 40-120mm deviation meets GB/T699-1999 standard.

The surface of the grinding rod should be flat, without obvious concave and convex parts, no visible cracks, overburning and other phenomena. The surface roughness Ra of the grinding rod should not be lower than the relevant provisions of the national rolling round steel standard.

2. Ratio of grinding: 3:4:3 (Note: not all the rods should be added in the initial grinding process. Details of our company's successful bidding can be provided to the site for guidance, and the largest diameter steel rods in each mill need to purchase an additional 20% of the total rod volume for subsequent rod addition)

3. The grinding rod should be blanking with the sawing machine. The ends should be smooth without obvious burrs.

4, the hardness of the rod should be HRC50-60 degree, and the hardness deviation should be controlled at + HRC5 degree.

5. raw materials: 60Mn/65Mn/45# steel /40Cr/42CrMo etc. (conform to GB/T699-1999 standard)

5, the grinding rod's straightness is less than 0.3%.

6, the length tolerances of grinding rods should be controlled at +10mm-15mm.