Hot-pushing elbow production process
A production process and elbow technology, which is applied in the field of hot push elbow production process, can solve the problems of high production cost, low product quality, and low yield, so as to improve product quality and production efficiency, coordinate reasonable matching, and reduce manufacturing costs. low effect
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[0016] The present invention will be further described below in conjunction with examples:
[0017] A hot push elbow production process, including the following steps:
[0018] (1) Raw material re-inspection: According to the elbow specifications and processing methods, determine that the blank tube is a φ219*12 steel pipe; check whether the supplier’s warranty is consistent with the actual product; check the appearance and geometric dimensions of the raw materials, port diameter, wall thickness and length , Mark the corresponding position immediately; take a sample for chemical composition analysis and mechanical performance testing, its 20 steel, in accordance with the GB / T8163-2008 standard, chemical composition: C: 0.17-0.23%, Si: 0.17-0.37%, Mn: 0.35-0.65%, P≤0.035%, S≤0.035%, Cr:≤0.25%, Ni:≤0.30%, Cr:≤0.25%, mechanical properties: tensile strength Rm: ≥410Mpa, yield strength Rel≥ 245Mpa, elongation rate A%≥25, cross-sectional shrinkage rate ψ%≥551.4, enter the raw material w...
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