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Quick Details

  • Place of Origin: Sichuan, China (Mainland)
  • Model Number: second generation salt
  • Brand Name: CTRI
  • Application: oil industry, automative industry, mould and dies, cutting tools
  • Thickness: 60 micron compound layer
  • Usage: increasing anti-corrosion, wear resistance and fatigue resistance
  • MOQ: 2 TONS
  • Design: salt bath nitrocarburizing
  • Surface treatment: Black Oxide Treatment
  • Enviroment: Friendly
  • Deformation: no deformation is observed
  • manufacturer: Yes
  • Products: quenching salt, technology transfer and quenching equipment

Packaging & Delivery

Packaging Details CARTON
Delivery Time 7 DAYS
Product Description


What is QPQ? 


QPQ is a kind of heat treatment that can increase components’wear resistance and fatigue resistance. 


Ø   QPQ is short for "Quench-Polish-Quench".


Ø   QPQ technology is a new revolution technology in the field of metallurgy.


Ø   Technical Philosophy


     It permeates a variety of elements to metal surface in two different nature of salt bath.


Ø   Result After QPQ

     By QPQ treatment, the wear resistance and corrosion resistance of  component will be increased than conventional heat treatment.



Technical Parameter


Product Overviews


•     The second generation QPQ technology enable carbon compound layer thickness reach to more than 30μm.


•  The third generation of QPQ technology makes the thickness of carbon steel compound layer reach to 60 μmor even more by accelerating the formation of permeation layer by using electric current. 
Unique Features after QPQ Treatment

1. Extremely high wear resistance and good fatigue resistance


2. Excellent corrosion resistance



3. Minimal Deformation



Limited Deformation




Shorten production time and reduce cost by replacing Quenching---Tempering---Black (Cr Plating) processing



4. Non-environmental Pollution



Identified by Environmental Protection Departments, all harmful substances emissions are lower than national standard. 




Product Uses


QPQ technology has wide application in over 10 industries,

1. Automobile,

2. Motorcycle,

3. Textile machinery,

4. Engineering machinery,

5. Chemical machinery,

6. Light industry machinery,

7. Petroleum machinery,

8. Gun machinery,

9. Machine tools, meters and instruments,

10. Gears, dies, tools, precise machinery, military, aviation, aerospace etc. 







Work Shop Flow 



Related Products


What does CTRI provide  for Customers ? 



Ø      Provide Complete Technology and QPQ Special Salt



We provide customers with


 1. detailed technical data;


2. complete technical documents;


3. compensated supply of production salt;  
4. drawings of equipment, special equipment;
5. Complimentary technical training;
6. on-site consulting service;
7. Complimentary lifetime technical service
8. External Processing is available

There are 4 production lines in QPQ technology Research & Development Department of CTRI,namely φ300*500, φ 500*700, φ800 * 1200, and φ 600*2500 . We also make outsourcing processing. 






Exhibition/ Visiting







1. Is CTRI a cutting tool manufacturer or a trading company?


CTRI is a cutting tool manufacturer since 1956 and is based in Chengdu, Sichuan Province, southwest of China.


2. To which countries is CTRI exporting?


We have many years of exporting experience with customers located in South America, European countries, Russia, Turkey, Iran, India, Indonesia, Thailand, Malaysia etc. We are exporting large varieties of products including carbide inserts, threading inserts (chasers), cermet bearing inserts, in process gauges, grinding wheels, clamping blocks, PCD/PCBN inserts etc.


3. I want to try your products, how do I proceed?


We can provide 2 pcs of samples for trial purpose. If you are not satisfied with the samples, we can provide different grade or different profile to re test if applicable.


Free samples available for trial


4. How do CTRI provide aftersale service, especially for special inserts or machines?


A: CTRI sent service engineer for on field maintenance and repair;


B:  CTRI sent sales and engineers for monthly and yearly customer visit and solve possible problems;


C:  Some products, customers are encouraged to search help from CTRI local dealers.







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