Repair/modification method for metallic substrates

A base material and metal technology, which is applied in the repair and modification of metal base materials, can solve problems such as poor product quality, influence, and deterioration of structural mechanical properties, and achieve high yield, cost reduction, and manufacturing stability Improved effect

Active Publication Date: 2020-09-18
FURUYA KINZOKU KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These defects or discontinuities lead to poor mechanical properties of the structure
Furthermore, the quality of products manufactured using a structure having a defect or discontinuity in the structure may be adversely affected

Method used

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  • Repair/modification method for metallic substrates
  • Repair/modification method for metallic substrates
  • Repair/modification method for metallic substrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Prepare 2 sheets of 100mm×50mm×thickness 8mm plate substrates containing Ag-based alloy (composition Ag-Pd-Cu-Ge), and the cross-section is Figure 14 Grooves were processed in the shape shown, and then, Ag-based alloy joints of the same composition were used for overlay welding to fabricate Ag-based alloy joints. Figure 15 A microscope cross-sectional image of the surfacing joint is shown in . Figure 16 shown in Figure 15 Enlarged image of boxed portion of . From the enlarged image, molten structures, dendrites, and pores can be confirmed. Next, use the following conditions Figure 8 The described construction is for repairing and modifying the base material. The conditions are: use a friction tool containing an Ir-based alloy (composition Ir-Re-Zr), a diameter of 25mm, and a flat front end, and set the inclination angle θ to 3 °, use a silicon nitride plate as a backing plate, use argon as a shielding gas and flow at 25 L / min, the tool rotation speed is 3000 rp...

Embodiment 2

[0112] Prepare a sheet material with a thickness of 2.2mm containing pure Ag (purity 99.99%), after TIG (Tungsten InertGas, tungsten inert gas) welding, pass Figure 8 Repair and modification of the TIG part are carried out according to the construction described in the description. For the plate before cutting the test piece, heat treatment is performed in the atmosphere at 400°C for 2 hours in advance to eliminate the influence of strain caused by welding, repair, and modification. In addition, the test piece whose tensile strength was confirmed conformed to the 14B standard of JIS Z2241, and was uniformly formed into a thickness of 2 mm using a wire cutting device so that thickness unevenness did not occur between the dots. In addition, the repair and modification of the TIG part adopt the following conditions: use a friction tool containing an Ir-based alloy (composition Ir-Re-Zr), a diameter of 15mm, and a flat tip shape, set the inclination angle θ to 3°, and use nitroge...

reference example 1

[0114] In the same manner as in Example 2, a 2.2 mm-thick plate material containing pure Ag was prepared, and a test piece was formed in the same procedure as in Example 2 without TIG welding, repair, or modification.

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Abstract

The purpose of the present invention is to provide a repair / modification method for metallic substrates that is capable of reducing both defects and regions of interface in the interior of a structural body by means of modifying the arrangement deep into the interior of a structural body while preventing impurities that, for example, originate with a probe on a friction stir welding tool from being mixed into the interior of the structural body. The repair / modification method for metallic substrates pertaining to the present invention involves: a step for preparing a metallic substrate havinga first region that is divided in the in-plane direction of the substrate and contains a defect and / or a structurally discontinuous part; and a step for repairing the defect and / or modifying the structurally discontinuous part by causing a probeless friction tool to be rotatingly pressed against the surface of the first region, thereby generating frictional heat while pressing on the surface.

Description

technical field [0001] The present disclosure relates to a method for repairing and / or modifying the structure of a metal-based base material, for example, to a method of using a friction tool without a probe (hereinafter, the meaning of a probe-free tool is also the same) for a metal-based substrate. The base material is repaired and / or modified. In the method, the maximum depth of the repaired part and / or modified part is 20 mm or less from the surface of the repaired part and / or modified part to the inside. Moreover, the method is to suppress impurities brought by the probes from being mixed into the structure, and by modifying the structure inside the structure, the defects existing in the structure are reduced, thereby reducing the interface area existing in the structure. Background technique [0002] When producing a structure made of metal-based materials, in addition to casting defects, there may be defects caused by fusion bonding, such as discontinuous parts of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/14B23K20/12C22F1/08
CPCC22F1/14C22F1/08B23K20/1215B23K20/122B23K20/1255B23P6/04B23K2103/08B23K20/1265
Inventor 阿野元贵丸子智弘宫泽智明岩本祐一
Owner FURUYA KINZOKU KK
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