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Surfacing repair material for mold

A technology for repairing materials and molds, which is applied in the field of surfacing repairing materials and surfacing materials for mold repairing. It can solve the problems of high surface quality, high wear resistance, and high hardness, and achieve high-temperature softening resistance and strong corrosion resistance. Effect

Inactive Publication Date: 2018-04-17
张宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high hardness and high wear resistance of this kind of material, the surface is not easy to process, and it is basically used directly after repair.
However, materials for molds require extremely high surface quality, so such materials are not suitable for surface repair of die-casting molds

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2

[0043] Make a welding wire with a diameter of 2.0mm, and the composition is shown in Table 1.

[0044] The welding test is TIG welding, the shielding gas is pure argon, the flow is 8L / min, the current is 120A, and the voltage is 13V. The quality and performance of the surfacing layer are shown in Table 2.

Embodiment 3-4

[0046] Make welding wire with a diameter of 2.4mm, and the composition is shown in Table 1.

[0047] The welding test is TIG welding, the shielding gas is pure argon, the flow is 10L / min, the current is 140A, and the voltage is 14V. The quality and performance of the surfacing layer are shown in Table 2.

Embodiment 5-6

[0049] Make welding wire with a diameter of 1.6mm, and the composition is shown in Table 1.

[0050] The welding test is gas shielded welding, and the shielding gas is 98%Ar+2%CO 2 , The flow rate is 12L / min, the current is 240A, and the voltage is 25V. The quality and performance of the surfacing layer are shown in Table 2.

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Abstract

The invention relates to a mold surfacing repair material, which contains 0.10-0.18% of C, 0.2-1.2% of Si, 1.6-3.5% of Mn, 2.5-6.0% of Cr, 1.0-2.0% of Mo, and 0.1-0% of Nb in weight percentage 1.0%, the rest is Fe, the hardness of the surfacing after welding is HV500‑600, it can resist high temperature softening at 550‑600 °C, it has strong corrosion resistance, and can be used for mold repair.

Description

Technical field [0001] The invention relates to a build-up welding repair material, belonging to the field of welding materials, in particular to a build-up welding material for mold repair. Background technique [0002] The casting mold materials of light metal materials such as aluminum alloy, magnesium alloy, and lithium alloy often cause fatigue cracks on the surface of the abrasive tool due to the long-term uninterrupted heating and cooling process. In order to maintain the surface quality of the casting material, the abrasive tool needs to be replaced or repaired to maintain the surface quality; and because the abrasive material is expensive, the repair method is usually selected. [0003] Hot work die steel represented by SKD61 is currently the most widely used and the largest amount. SKD61 is a Japanese brand, corresponding to the national standard 4Cr5MoSiV1, and the corresponding American standard is H13. This type of material is mainly used in die-casting molds such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30
CPCB23K35/3053
Inventor 张宇
Owner 张宇
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