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Contact SU SHI
Service Hotline 0755-27291255
Fax0755-27293730
E-MAIL: sushirechuli@163.com
CompanyAddress: 14 BaiSha Road,Second Industrial Zone,Shenzhen manholeNewbridge
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| bright annealing | |
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Commonly known asshiningbright annealingafterannealingis mainlyconfined spaceheatingtemperatureannealingallowsthe followingslow coolingin a confined spaceof at least 500degrees and thencoolednaturallythere willnot causeeventhe luminance ofdecarbonizationsituationsarise. OrderHotline:400-6388-689 |
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Implemented in a protective atmosphere non-oxidizing surface and decarburization annealing a cold rolled strip . With a single protective atmosphere of inert gas of argon or helium , mixed gas is CO-H2-N2-CO2 (DX), N2-H2 (HNX), N2-CO2-H2 and the like. The composition of the gas mixture through the strip annealing process can adjust the oxidation and reduction, carburization and decarburization rate is equal to the strip in order to achieve annealing and decarburization in a non-oxidizing . After annealing the strip surface oxide film is not visible to protect metallic luster.
According to the chemical reaction and its variation with the steel furnace gas , preparation and application of protective atmosphere , determined to prevent oxidation and decarbonization conditions. CO2 and H2O can strip surface oxidation and decarbonization ; CO and CH2 can strip the surface of the steel surface oxide layer reduction and carburization ; H2 reduction although the oxide layer can also make the steel surface decarburization. Bright annealing depends on the oxidation H2O, CO2, H2 atmosphere and the reduction reaction of Fe . N2 and the other inert gas atmosphere is a neutral protection of steel , wherein up to N2 applications, but which must be removed in an atmosphere of oxygen in order to play a good protection. N2 and H2 mixed commonly used protective atmosphere .
Annealing furnace using a protective atmosphere of three phases:
( 1 ) cold purge the oxygen annealing in the inner cover is blown ;
( 2 ) hot blown washed to remove the residue of the plate with the rolling surface of the EC ;
( 3 ) the normal supply , to ensure positive pressure within the hood , to the completion of the annealing cycle baked
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
E-MAIL:sushirechuli@163.com
Company address: Shenzhen, Baisha bridge Second Industrial Zone No. 14
