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Hot werk mould steel welding material

A technology of hot working die steel and welding materials, applied in the direction of welding/cutting media/materials, welding media, welding equipment, etc., can solve the problems that cannot meet the requirements of automatic surfacing welding manufacturing molds, etc., to improve welding efficiency and shorten the manufacturing cycle Effect

Inactive Publication Date: 2008-05-28
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surfacing welding manufacturing mold requires automatic welding methods, and the existing mold steel welding materials cannot meet the requirements of automatic surfacing welding manufacturing molds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Example 1, adopt the novel hot working die steel surfacing welding electrode of the present invention, carry out the five-speed gear hot forging die welding repair that 20,000-40,000 KN mechanical forging presses use, welding process sees Table 1, the service life ratio after repairing uses D397 The welding rod is 220% longer. Cladding metal composition (wt%): C: 0.28; Cr: 9.6; Mo: 1.1; Ni: 0.65; V: 0.68; W: 0.31; Mn: 0.42; Si: 0.75; ; Ce: 0.01; Ti: 0.015; B: 0.010.

[0012] Table 1 Electrode surfacing process (DC reverse connection)

[0013] Electrode diameter (mm)

example 2

[0014] Example 2, the five-speed gear hot forging die tungsten argon arc welding (TIG) repairing of 20,000-40,000 KN mechanical forging presses using the novel hot work die steel flux-cored welding wire of the present invention, the service life ratio is compared with imported T - 50% longer of SKD61 solid wire. The welding process is shown in Table 2. Cladding metal composition (wt%): C: 0.32; Cr: 10.6; Mo: 1.0; Ni: 0.65; V: 0.82; W: 0.38; Mn: 0.56; Si: 0.85; ; Ce: 0.009; Ti: 0.019; B: 0.010.

[0015] Table 2 TIG surfacing process

[0016] Flux cored wire (mm)

example 3

[0017] Example 3, adopt novel hot working die steel flux-cored welding wire of the present invention to carry out the five-speed gear hot forging mold melting pole argon arc welding (MIG) automatic surfacing manufacturing that 20,000-40,000 KN mechanical forging presses use, and the mold manufacturing cycle is only for 2 days. The welding process is shown in Table 3. Deposit metal composition (wt%): C: 0.35; Cr: 10.2; Mo: 0.98; Ni: 0.67; V: 0.89; W: 0.43; Mn: 0.56; Si: 0.75; ; Ce: 0.008; Ti: 0.018; B: 0.009.

[0018] Table 3 MIG surfacing process (substrate is 45 steel)

[0019] Flux cored wire (mm)

Welding current (A)

Preheating temperature (℃)

Tempering after welding (℃)

Tempering time (hours)

[0020] 2.0

300

400

480+560

2+2

[0021] Example 4, adopt the novel hot working die steel surfacing welding electrode of the present invention, carry out the five-speed gear hot forging mold welding repair t...

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Abstract

A weld material for the hot die steel in order to repare it or making the die by welding contains C (0.15-0.35 wt.%), Cr (8.0-11.0), Mo (0.8-1.5), Ni (0.6-0.92), V (0.6-1.05), W (0.2-0.5), Mn (0.2-0.55), Si (0.5-0.85), S (0-0.035), P (0-0.04), Ce (0.001-0.05), Ti (0.005-0.025) and B (0.002-0.015).

Description

technical field [0001] The invention belongs to the metallurgical processing technology and relates to a new welding material for hot work die steel. Background technique [0002] At present, there are many types of hot work die steels, such as ordinary 5CrMnMo, 5CrNiMo, 3Cr2W8, and 45CrWMoVTi, 35CrNi3MoV, H-13 with better performance. However, there are fewer types of welding materials, commonly used are D337 electrode (3Cr2W8 type), D397 electrode (5CrMnMo type), T-SKD61 and QRO90 welding materials (4Cr5MoSiV1 or H-13 type) and so on. With the development of industry, there are more and more types of hot work die steels and their application fields, such as thermal cutting tools, forging tool edges, forging dies, die-casting dies, injection molds, trimming dies, rolls, forming rolls, etc. Therefore, the performance requirements for mold steel are getting higher and higher, and the method of manufacturing molds is also constantly improving. For example, some molds are prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/24B23K35/30
Inventor 任振安孙大千宣兆志殷世强
Owner JILIN UNIV
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