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Contact SU SHI
Service Hotline 0755-29721819
Fax0755-27293730
Fax0755-27415741
E-MAIL: 2727255832@qq.com
CompanyAddress: 14 BaiSha Road,Second Industrial Zone,Shenzhen manholeNewbridge
Products
| Gas nitriding | |
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Gas nitriding:the workpieceis placedin the furnace,NH3gasdirectlyinputLeenitridefurnaceof500 ~ 550 ℃,for 20 to100 hours,so thatNH3gasis decomposed intoan atomic state(N) ofthegas(H)gasthenitridingtreatment,the steelsurfaceabrasion,corrosion-resistantcompound layeristhe main purpose. OrderHotline:400-6388-689 |
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Gas nitriding : the workpiece is placed in the furnace , NH3 gas directly input Lee nitride furnace of 500 ~ 550 ℃ , for 20 to 100 hours , so that NH3 gas is decomposed into an atomic state (N) of the gas (H) gas the nitriding treatment, the surface of the steel wear resistance, corrosion compound layer as the main purpose , of a thickness of about 0.02 ~ 0.02m / m, extremely hard nature of Hv 1000 ~ 1200, and very brittle , NH3 of depending on the size of the decomposition rate of flow varies with the temperature change in the level , the greater the degree of decomposition , the lower flow rate , flow rate , the higher the smaller the decomposition , the decomposition rate , the higher the temperature , the higher the temperature , the lower the decomposition rate is also lower , NH3 gas at 570 ℃ when thermally decomposed as follows :
NH3 → [N ] Fe + 3/2 H2
The decomposed in N, with the diffusion into the surface of the steel is formed . Fe2 phase - 3N gas nitriding , hardening of the general shortcomings of thin and nitriding long time .
By the decomposition of NH3 gas nitriding low nitriding efficiency , it is generally applicable to both fixed selection nitrided steel , such as those containing Al, Cr, Mo and other elements of the nitride , the nitride few can not be otherwise , the general use of JIS, SACM1 new JIS, SACM645 and SKD61 to toughening treatment , also known as tempered by Al, Cr, Mo , etc. are to improve elements of the transformation point temperature , the quenching temperature is high, compared with ordinary structural alloy steel tempering temperature is high, which nitriding temperature between prolonged heating , tempering brittleness , so pre impose quenched toughening treatment . NH3 gas nitriding , surface roughness because time is long , hard and brittle and difficult to grind , and a long time is not economic for plastic injection feed tube and helical rod -shaped nitride machine .
Su's heat treatment Co. Ltd. was founded in 1990, after decades of development, scale is continually expanding, is located in Shajing Town Baoan District Shenzhen City Bridge second industrial zone, covering an area of 3000 square meters, the main business is to take all the metal, alloy steel, beryllium copper, heat treatment of high speed steel, cryogenic treatment (-196 C), nitrogen gas, liquid nitrogen, QPQ salt bath production line, high-frequency quenching, blackening and carburizing, the surface of hard and stainless steel processing.
The company is equipped with power of heat treatment technology, established a perfect quality testing equipment, equipped with vacuum quenching furnace, vacuum furnace, pit furnace, furnace, liquid nitrogen atmosphere furnace, rotary furnace, large mesh belt furnace, improve metallographic inspection equipment, material failure analysis, scientific management and complete, rigorous technology, skilled operation.
Company will be excellent quality and perfect service, and actively challenge, satisfy customer demand, has passed ISO9001:2000 in 2003 September (SGS) international quality certification. Has now become a reputable manufacturers.
Su's heat treatment (Shenzhen) Co., Ltd. Guangdong ICP No. 14020634
service hotline: 0755-27291255
Fax: support for 0755-27293730, 0755-27415741
E-MAIL:sushirechuli@163.com
Company address: Shenzhen, Baisha bridge Second Industrial Zone No. 14
