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Avoid the appearance of stainless steel pipe products decarbonization approach

Author: ComeFrom: Date:2014-06-28 16:49:59 Hits:923
Stainless steel pipe appearance decarbonization problem solving, critical in the heat treatment process. Needs to change the approach taken in this state. Consider appropriate use of this technology needs to solve the main problem is how to prevent lead dust contamination. 
Many stainless steel pipe products, the appearance of the extent of use of the survival of life decarbonization and steel-related products. Because oxygen decarburization of the steel are simultaneously implemented, because of this, as long as the thermal treatment process, try to make contact with the wire less air can achieve the goal of improvement in the decarburization. 
Overseas imports of wire rod decarburization 0.02 ~ 0.04mm, Japan Kobe rod appearance can be done without removal, and similar domestic products Decarburization uniform depth of more than 0.05mm. Process is: first a wire from the lead tank austenitizing utility, pre-heated liquid will lead to 871 ℃, stainless steel tubes in liquid lead after the successful realization of austenitizing, quenching and then into the tank, and then enter a second lead tank tempering (482 ℃). 
In addition, tool steel, bearing steel decarburization if not eliminate the appearance of the net to make clean, make tool steel, bearing steel outer surface hardness and wear resistance to reduce Moreover, when hardened, because of changes in the size of the inner and outer layers is not the same as leaving the pieces appearance of crack formation. Because the wire is not in contact with the molten lead in the air, effective to prevent the decarbonization. 
For example, the life of the rope Survival determined primarily on its fatigue strength and wear resistance than the standard decarburization if the outer wire rope, a carbon compound phase consolidation phase and will wear as the impairment of the surface, and therefore this will directly affect the two use performance. So how to avoid the appearance of stainless steel pipe products decarbonization is a problem in the production process should be noted.
 
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