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Stellite alloy welding and heat treatment process for modular production

A process method and modular technology, applied in welding equipment, welding accessories, metal processing equipment, etc., can solve the problem of unable to complete the welding of Stellite alloy blind plates, reduce the scope of welding heat affected zone, and avoid cracking. Defects, the effect of reducing welding stress and deformation

Active Publication Date: 2021-11-05
江苏利柏特股份有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

These characteristics make the conventional welding and heat treatment process unable to complete the welding work between Stellite alloy blind plate and carbon steel pipe or plate

Method used

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  • Stellite alloy welding and heat treatment process for modular production
  • Stellite alloy welding and heat treatment process for modular production
  • Stellite alloy welding and heat treatment process for modular production

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Embodiment Construction

[0099] The present invention will be described in further detail below through specific examples.

[0100] Such as Figure 1 to Figure 7 As shown, the Stellite alloy welding and heat treatment process method for modular production comprises the following steps:

[0101] A. Preparation before welding, including the following sub-steps:

[0102] a1) Determine the execution standards of welding and heat treatment;

[0103] a2) Check the specifications and grades of the base metal; whether the specifications, grades and gas of the welding consumables meet the standards;

[0104] The execution standard in this embodiment is:

[0105] ASME Ⅸ-2017 "Welding and Brazing Procedures, Welders, Brazers, Welding and Brazing Operators Qualification Standards";

[0106] ASME Ⅷ-1-2017 "Pressure Vessel Construction Rules"

[0107] a3) Select tool;

[0108] a4) acceptance inspection of tools;

[0109] The welding equipment needed include: inverter DC argon arc / manual tungsten argon arc we...

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Abstract

The invention discloses a Stellite alloy welding and heat treatment process method for modular production, comprising the following steps: A, preparation before welding; B, pairing preparation; C, groove pairing and spot welding; D, welding Seam welding, including the following sub-steps: d1) Surface quality inspection: d2) Preheating and welding process, including the following sub-steps: d21) Preheating the welding part; d22) The welding process is GTAW, linear bead, pressure pass welding , the joints are staggered; d3) according to the type of weld, select the corresponding welding method for welding; d4) root welding; d5) manual argon tungsten arc welding to fill the cover; E, post-heat treatment and disinfection of the weld Stress heat treatment; F) weld VT inspection; G) weld PT inspection; H) weld RT inspection. The welding and heat treatment process adopts post-heating and stress-relief heat treatment steps to eliminate hydrogen gas inside the deposited metal, eliminate residual stress in the weld seam and heat-affected zone, reduce welding deformation, and make the metal structure of the weld seam dense.

Description

technical field [0001] The invention relates to a Stellite alloy welding and heat treatment process for modular production, which is used for welding and heat treatment between pipelines and plates, and between plates in the modular production process. Background technique [0002] In the modular production process, it is often encountered that the welding of the girth weld between the pipe and the blind plate, or the welding of the longitudinal weld between the plate and the plate, of these two base materials, the first base metal The material is carbon steel SA-106Gr.B seamless steel pipe or plate, and the second base material is Stellite UNS R30006 blind plate; the welding and heat treatment process of Stellite alloy material is very difficult and requires high quality. The welding heat treatment process has a long working cycle and requires high operational skills for welders. These characteristics make the conventional welding and heat treatment process unable to compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/235B23K9/32
CPCB23K9/167B23K9/235B23K9/32
Inventor 沈斌强王飞方战华陈杰恒何仲喜鑫陈益希
Owner 江苏利柏特股份有限公司
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