Gongyi Hengming Metal Products Co., Ltd

With a complete scientific quality management system, good quality and good faith, we win good reputation and occupied this field for 50crva steel wire ASTM-A401, 65mn square spring steel wire EN10270-2, Valve steel wire ASTM-A401. As long as you explain the requirements, the rest is for us. We will give you satisfied products and provide a full range of after-sales service. We have state-of-the-art tools. To learn more about what we can easily do in your case, make contact with us at any time. In order to enhance the company's professional production skills, we uphold a rigorous work attitude, and formulate a strict production process.

The following is the international standard classification method:

1, heat treatment oil: some types of oil are easily washed away by water because the oil is formulated with demulsifier. These oils can be called "soluble oil" and the manufacturer can determine the oil according to the user's requirements. 

(1) cold hardening (< 80 ℃) : A rapid quenching oil, UHA.B normal quenching oil, UHB. 

(2) A thermal quenching (30 ℃ -- 130 ℃) : A rapid quenching oil, UHC;B normal quenching oil UHD. 

(3) the thermal quenching (130 ℃ -- 180 ℃) : A rapid quenching oil, UHE;B normal quenching oil, UHF. 

(4) high temperature quenching (> 180 ℃) : A rapid quenching oil, UHG.B ordinary (normal) hardening oil, UHH. 

(5) vacuum quenching, UHV. 

(6) others, UHK. 

2. Heat treatment water:

(1) surface quenching: A water, UAA;B water-bearing liquid for rapid quenching, UAB;C water-bearing liquid for slow quenching, UAC. 

(2) integral quenching: A water, UAA;B water-bearing liquid for rapid quenching, UAD;C aqueous liquid for slow quenching, UAE; 

(3) others: UAK.  

3. Molten salt for treatment:

(1) 150 ℃ to 500 ℃, molten salt (150 ℃ -- 500 ℃), USA. 

(2) 500 ℃ to 700 ℃, molten salt (500 ℃ -- 700 ℃), USB; 

(3) others: USK.  

4. Gas for heat treatment: A air, UGA;B neutral gas, UGB;C reduced gas, UGC;D oxidation gas, UGD. 

5. Fluidized bed: UF. 

6, others: UK.  

Domestic classification of heat treated oils

Class I cold quenching oil:

A. ordinary quenching oil, used for quenching materials with small size and good hardenability. 

B. Fast quenching oil, used for quenching large and medium materials. 

C. overspeed quenching oil, used for quenching large and poor hardenability materials. 

D, bright quenching oil, used for small and medium section bearing steel, tool steel, cutting tool steel and instrument parts under the protection of the atmosphere of quenching. 

E, fast bright quenching oil, used for medium and poor hardenability of materials in a controlled atmosphere quenching. 

F, no. 1 vacuum quenching oil, used for medium materials under vacuum quenching. 

G, no. 2 vacuum quenching oil, used for quenching materials with good hardenability in vacuum state.  

Class II hot quenching oil:

A, no. 1, isothermal, graded and quenching oil, used to about 120 ℃ hot oil quenching. 

B, no. 2, isothermal, graded and quenching oil, used to about 160 ℃ hot oil quenching. 

Type III tempered oil:

A, no. 1 back to heat the oil, to about 150 ℃ tempering. 

B, no. 2 back to heat the oil, used to back to around 200 ℃

With wide experience and expertise, Friend Metal is engaged in the developing, manufacturing and marketing of oil tempered and quenched spring steel wire ASTM-A230-99, ASTM-A401, EN10270-2, JIS G3561. As a professional manufacturer, we now brings you high quality various steel wires made in China which comes in high strength, well toughness and excellent wearing resistance. We also welcome your customized orders.

With this motto in mind, we have become one of the most technologically innovative, cost-efficient, and price-competitive manufacturers for Gongyi Hengming Metal Products Co., Ltd. All inquiries from you will be highly appreciated. In order to make more people know our products and to enlarge our market, we have devoted a lot of attention to technical innovations and improvement, as well as replacement of equipment.