Gas shield build-up welding flux-cored wire for hot-forging die

A technology of gas shielding and hot forging dies, which is applied to welding media, manufacturing tools, welding equipment, etc., can solve the problems of general welding process performance and short service life, and achieve good toughness, improved service life and low cost of use.

Active Publication Date: 2015-05-06
天津大桥金属焊丝有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flux-cored welding wire for hot forging dies on the market can only meet the basic needs, the service life is often short, and the welding process performance is average.

Method used

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  • Gas shield build-up welding flux-cored wire for hot-forging die
  • Gas shield build-up welding flux-cored wire for hot-forging die

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0027] Embodiment 1-4 prepares welding wire of the present invention:

[0028] Prepare the medicinal powder according to the ratio in Table 1, and bake the medicinal powder; mix and stir the baked medicinal powder; select the steel strip with the above ingredients, and cut the steel strip to a suitable size; send the medicinal powder and steel strip to The forming machine is used for rolling production; according to the requirements, the rolled semi-finished product is drawn to the required size; the finished welding wire is vacuum packaged.

[0029] The mass fraction of the prepared welding wire powder is shown in the following table:

[0030] Table 1

[0031]

[0032]

experiment example 1

[0033] Experimental Examples 1-4 The hardness and service life tests of the flux-cored wires prepared in Examples 1-4 are shown in Table 2.

[0034] Table 2

[0035] project

[0036] The service life of the test mold on the thermal friction press has increased from the previous 1000-1300 pieces to 1600-2460 pieces, especially with the addition of cobalt, the service life has been significantly improved.

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PUM

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Abstract

The invention discloses a gas shield build-up welding flux-cored wire for a hot-forging die. The gas shield build-up welding flux-cored wire comprises a steel strip welding wire skin and a flux core, wherein the steel strip welding wire skin comprises, by mass, 0.01-0.04% of C, 0.19-0.26% of Mn, not greater than 0.03% of Si, not greater than 0.010% of S, not greater than 0.015% of P, 0.010-0.045% of Als, not greater than 0.003% of Ca, not greater than 0.005% of N and the balance being Fe and unavoidable impurities; flux core powder comprises, by mass, 10-20% of TiO2, 2-7% of SiO2, 2-7% of ZrO2, 2-6% of NaF, 8-15% of ferromanganese, 2-6% of ferrosilicon, 4-8% of metallic nickel, 8-14% of metallic chromium, 10-16% of ferrochrome, 8-15% of ferro-molybdenum, 8-13% of metallic tungsten, 1-4% of ferrovanadium, 2-7% of metallic cobalt and the balance being iron powder. The gas shield build-up welding flux-cored wire can meet the requirement of the hot-forging die for build-up welding and also has a good welding processing property. Weld metal has high hardness and relatively good toughness.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a gas-shielded surfacing flux-cored welding wire for a hot forging die. Background technique [0002] With the development of manufacturing technology, especially the rapid development of the automobile industry, higher requirements are put forward for the supporting industries. Hot forging abrasives are widely used in the production and manufacture of auto parts. The service life of abrasives is related to the yield of products and the efficiency of production. The use of mold repair can undoubtedly greatly reduce the cost of use, improve the service life of abrasive tools, and reduce the waste of resources. The main way to repair the abrasive tool is to carry out surfacing welding, and then reopen the cavity, so as to realize the recycling of the mold, which is the most economical way to use the abrasive tool at present, and the service life of the mold after repair is the sam...

Claims

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Application Information

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IPC IPC(8): B23K35/30B23K35/368
CPCB23K35/3053B23K35/368
Inventor 郑子行杨天文杨敬雷杨钢杨新禄
Owner 天津大桥金属焊丝有限公司
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