Ảnh thứ 0
Ảnh thứ 1
Ảnh thứ 2
Ảnh thứ 3
Ảnh thứ 4
Ảnh thứ 5
Ảnh thứ 6
Ảnh thứ 0
Ảnh thứ 1
Ảnh thứ 2
Ảnh thứ 3
Ảnh thứ 4
Ảnh thứ 5
Ảnh thứ 6

Welding, restoration, repairing

Hard Surfacing

Currently, we, NamThanh Group, are collaborating with the Korean Company to provide repairing, recovery, and Hard Surfacing service for the abraded surfaces by welding with hard and abrasion-resistant Hi-Cr materials (Hard Surfacing), especially for the grinding tables and rollers of cement, thermal power, mining industries.

 

Why Hard Surfacing?

  • Hard Surfacing can reduce costs up to 25%-75% compared with replacing new parts.
  • Hard Surfacing may extend working time up to 30%-300% depend on different application
  • Hard Surfacing reduces coasting time.
  • Hard Surfacing reduces spare parts reserves.
  • Hard Surfacing reduces energy costs when operating.

Product Description

Hard Surfacing Process:

  • Step 1: Clean the work surface of the roller tire and table liner. Clean all surfaces of roller tire and table liner.
  • Step 2: Check the surface of the roller tire and table liner to detect cracks. If there are cracks and sharp edges due to the worn-out areas, take care of those areas to create a relatively smooth surface before welding.
  • Step 3: Setting up the rollers and grinders. The welding control cabinets are reasonably arranged on the working platform in front of the mill door.
  • Step 4: Heat up all surfaces of roller tire and table liner to remove moisture on the surface of roller tire and table liner.
  • Step 5: In the welding of welding layers, cleaning of the surface before welding the next layer. Perform the cleaning of welding slag. Then clean up the slag.
  • Step 6: Checking the weld, ensures that the welds overlap steadily, if not we need to adjust the weld mode accordingly.
  • Step 7: Temperature control on roller tire and table liner is maintained. Maintain air cooling on the roller surface. If the roller temperature is too high, stop the welding, cool the roller tire and table liner before continue welding.
  • Step 8: In the course of welding, the circularity and uniformity of roller tire and table liner surfaces must be adjusted.
  • Step 9: After finishing the Hard Facing, the roller tire and table liner are cleaned and cooled naturally in the environment.
  • Step 10: Disassembly of equipment and machine cleaning.
  • Step 11: Acceptance before trial run.
  • Step 12: Hand-over test run and test track.

Images of Hard Surfacing at NamThanh factory:

Images of Hard Surfacing at the customer’s factory:

A list of previous customers:

  1. Yen Binh Cement Joint Stock Company
  2. Hoang Mai Cement Joint Stock Company
  3. Huong Duong Cement Joint Stock Company
  4. Vissai Cement Joint Stock Company
  5. Tan Quang Cement Joint Stock Company
  6. Quang Son Cement Joint Stock Company
  7. The South Branch- CamPha Cement Joint Stock Company
  8. Ninh Binh Fertilizer Single-member Limited Liability Company
  9. Song Thao Cement Joint Stock Company
  10. Cam Pha Cement Joint Stock Company
  11. Nghi Son Cement Joint Stock Company
  12. FiCo Tay Ninh Cement Joint Stock Company
  13. Long Son Cement Joint Stock Company
  14. Song Gianh Cement Joint Stock Company
  15. Dong Lam Cement Joint Stock Company
  16. Hoang Thach Cement Joint Stock Company
  17. Van Hoa Cement Joint Stock Company
  18. Hai Van Cement Joint Stock Company
  19. FLSmidth VN Limited Liability Company
  20. Hong Ha Casting Mechanical Joint Stock Company
  21. Thaigroup Group Joint Stock Company
  22. Thanh Thang Cement Joint Stock Company
  23. Dien Bien Cement Joint Stock Company
  24. Quan Trieu Cement Joint Stock Company
  25. Quang Ninh Cement and Construction Joint Stock Company
  26. But Son Cement Joint Stock Company
  27. Vietnam Construction Material Co., Ltd.
  28. Central Region Corporation-JSC
  29. Cong Thanh Cement Experiment
  30. Ha Bac Fertilizer & Chemical Joint Stock Company
  31. X18 Cement Joint Stock Company
  32. Bim Son Cement Joint Stock Company
  33. Tam Diep Cement Joint Stock Company
  34. Xuan Thanh Cement Joint Stock Company
  35. Ha Tien 1 Cement Joint Stock Company
    • Phu Huu Grinding Station
    • Kien Luong Cement Joint Stock Company