Stainless steel lap joint stub end is a tensile or compression edge production, method of making forming vertical edge height of the. Mainly pided into convex curve lap joint stub end and concave curve lap joint stub end. The stress and deformation properties of convex curve lap joint stub end is similar to the shallow drawing, the deformation degree is denoted by Kfb=r/R0; the degree of lap joint stub end coefficient Kfb=r0/ deformation concave curve lap joint stub end (r0+b) to said, when the center of the curve angle smaller than 180 DEG, Kfb=Kfk α/180°.
Stainless steel lap joint stub end is generally pided into stretch lap joint stub end and compression lap joint stub end deformation zone, the elongation of the lap joint stub end is blank, stress to pull in cutting under the action of the tangential deformation, ultimate deformation degree under the deformation zone cracking limit. While the compression lap joint stub end radius is in addition to near the region near the vertical side of the root of metal deformation completely, the other part of the blank deformation zone is tangential compressive deformation of tangential compressive stress under the action.
Stainless steel lap joint stub end due to the long time work, there will be fatigue and wear, because of these problems, so the material should be stainless steel lap joint stub end has high bending strength and contact fatigue strength, the core is to have good strength and toughness. If the work is stable, there is no strong impact of the gear, the use of 40Cr, 40MnB, such as low carbon steel or medium carbon low alloy and other materials. If the work condition is not good, we will load the quality of material properties and heat treatment of stainless steel lap joint stub end has required that we must choose some alloy steel as raw material, so as to ensure the normal operation of equipment.
Source: wilsonpipeline Pipe Industry Co., Limited (www.wilsonpipeline.com)
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