Welding Rebuild On Vertical Mill Components through the scientific and reasonable alloying element formula, the spare parts after Welding Rebuild by us has good physical and chemical properties, high impact value, and constantly forms a uniform hardening layer around the alloy surface during use, which improves the wear resistance. Our welding service includes Grinding Table Liner Welding Recondition, Wear Resistant Casting Spare Parts Welding Rebuild, Cement Mill Grinding Table Welding Rebuild.

Quick View On Product 

1. Products & Services: Welding Rebuild

2. Overlay Material: chromium carbide overlay through open arc welding 

                                 OR tungsten carbide overlay through plasma transfer welding 

3. Grade: HP700S & HP750W 

4. Standard Size: Make to order  

5. Quality Standard:  ASTM G65, AISI, ASTM, BS, DIN, GB, JIS

6. Applications: Mining, Metallurgy, Cement, Railway, Road, Power Generation, Military & Others

7. Certification: ISO9001, SGS, CTI, ROHS

 Metallographic Pictures of Tungsten Carbide Overlay By Plasma Transfer Welding 

HP 750W products are developed for extremely abrasive applications and both the prime carbide and the matrix are very hard to be against abrasion. This grade is made from spherical tungsten carbide dispersed in NiCrBSi matrix by Plasma Transferred Arc Weld (PTAW) process. The tungsten carbide is 70-75 wt % and the particle size is in the range of 60-325 mesh (44-250 micron) with hardness HV 2700- 2900. The bulk hardness of NiCrBSi matrix is HRC 60-70.

Metallographic Pictures of Chromium Carbide Overlay By Open Arc Welding 

The vertical Mill spare parts_Rollers and Grinding Table Liners which are welding rebuilt by us have unique quenching properties through HP's independently designed wear resistant treatment process. The product not only has good wear resistance and high impact load, but also improves the grinding efficiency and increases the hourly capacity of the machine.

Laboratory Equipments Testing On Welding Rebuilt Product

Test Reports On PTAW Products:

Packing & Delivery 

Packing Way: By Steel Frame or Wooden Case

Delivery Time: 30 days or to discuss

FAQ On HP Welding Rebuilt Products

Question 1: What should be taken before welding rebuild?

Answer: Dye penetrate test on workpiece. This is the key operation to protect it from being ruptured during welding rebuild

Question 2: How many welding pass to be made with hardfacing overlay on workpiece?

Answer: Normally we get Bottom Build, Buffer Layer, Enhance Milddle & Top Hardfacing Surface, total 4 overlays are recommended.

Question 3: How much hard from the surface of welding rebuilt parts?

Answer: The hardness tested from surface could be HRC60±2.

Question 4: What is the warranty period of the rebuilt roller & grinding table of cement mill?

Answer: 2,000 hours guaranteed for slag and 8,000 hours for limestone in normal work condition.

Question 5: What kind of technology taken on welding rebuilt products?

Answer: Open arc welding and Plasma transfer alloy welding.