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A kind of welding wire preparation method for aluminum-magnesium alloy casting

A technology of aluminum-magnesium alloy and welding wire, which is applied in the field of preparation of aluminum alloy welding wire, can solve the problems of complex preparation process, decrease in reliability and stability, increase of welding cracks and high concentration of welding stress, etc., and achieve simple preparation process and low production cost Low, equipment adaptability effect

Active Publication Date: 2020-08-25
NO 59 RES INST OF CHINA ORDNANCE IND +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aluminum-magnesium alloy welding wire prepared by this method has good arc stability, but its preparation process is complicated. When using this welding wire for welding processing of high-performance aluminum-magnesium alloy castings, it is difficult to ensure the excellent matching between the welding wire composition and the casting composition, which will increase Risk of welding cracks and high concentration of welding stress, resulting in reduced reliability and stability of aluminum-magnesium alloy castings under long-term service conditions

Method used

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  • A kind of welding wire preparation method for aluminum-magnesium alloy casting
  • A kind of welding wire preparation method for aluminum-magnesium alloy casting

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A method for preparing welding wire for ZL301 aluminum-magnesium alloy castings.

[0024] The three-opening hollow rod mold used in this method is as follows: figure 1 As shown, the three-opening hollow rod mold includes a left half mold body 1, a right half mold body 2 and a lower half mold body 3, and two air cooling channels with an inner diameter of 15mm are arranged on the lower half mold body 3. The hole is provided with an aluminum silicate fiber felt insulation layer in the three-opening hollow casting mold; it is arranged between the right half mold body 2 and the lower half mold body 3, and between the left half mold body 1 and the lower half mold body. The thickness of the aluminum silicate fiber felt 501 between the bodies 3 is 5mm, and the thickness of the aluminum silicate fiber felt insulation layer 502 arranged on the upper part of the cavity of the three-opening hollow casting rod mold is 10mm.

[0025] The combined reverse extrusion die used in the me...

Embodiment 2

[0031] A method for preparing welding wire for ZL303 aluminum-magnesium alloy castings.

[0032] The three-opening hollow casting rod mold used in this method is as follows: figure 1 As shown, the three-opening hollow rod mold includes a left half mold body 1, a right half mold body 2 and a lower half mold body 3, and two air cooling channels with an inner diameter of 12mm are arranged on the lower half mold body 3. Hole, the aluminum silicate fiber felt insulation layer 502 is arranged in the three-opening hollow casting rod mold; it is arranged between the right half mold body 2 and the lower half mold body 3, the left half mold body 1 and the lower half mold body The aluminum silicate fiber mat 501 between the mold bodies 3 has a thickness of 10 mm, and the aluminum silicate fiber mat insulation layer 502 arranged on the upper part of the cavity of the three-opening hollow casting rod mold has a thickness of 12 mm.

[0033] The combined reverse extrusion die used in the me...

Embodiment 3

[0039] A method for preparing welding wire for ZL305 aluminum-magnesium alloy castings.

[0040] The three-opening hollow casting rod mold used in this method is as follows: figure 1 As shown, the three-opening hollow rod mold includes a left half mold body 1, a right half mold body 2 and a lower half mold body 3, and two air cooling passages with an inner diameter of 13mm are arranged on the lower half mold body 3. Hole, the aluminum silicate fiber felt insulation layer 502 is arranged in the three-opening hollow casting rod mold; it is arranged between the right half mold body 2 and the lower half mold body 3, the left half mold body 1 and the lower half mold body The aluminum silicate fiber mat 501 between the mold bodies 3 has a thickness of 8.5 mm, and the aluminum silicate fiber mat insulation layer 502 arranged on the upper part of the cavity of the three-opening hollow casting rod mold has a thickness of 9 mm.

[0041] The combined reverse extrusion die used in the me...

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Abstract

The invention provides a preparation method of a solder wire for aluminum-magnesium alloy castings. The preparation method comprises the steps of arranging an aluminum silicate fiber felt insulating layer in a mold; preheating a left half mold body and a right half mold body of the mold correspondingly; pouring aluminum-magnesium alloy melt subjected to refining treatment and modification treatment into the mold to obtain an aluminum-magnesium alloy hollow casting rod; wrapping the aluminum-magnesium alloy hollow casting rod tightly, putting the aluminum-magnesium alloy hollow casting rod intoan aluminum-magnesium alloy casting base material thermal treatment furnace to conduct heat preservation at 460-500 DEG C for 12-14 h and then cooling the aluminum-magnesium alloy hollow casting rodalong with the aluminum-magnesium alloy casting base material thermal treatment furnace; putting the aluminum-magnesium alloy hollow casting rod into a combined backward extrusion mold to obtain the solder wire through extrusion processing. Through the preparation method, the solder wire is prepared by extruding the hollow casting rod through backward extrusion; the requirement for the molding pressure of the solder wire is low; continuous extrusion molding of the solder wire can be completed through a common short-strip vertical press machine; the equipment adaptability is high; and the preparation method can be applied and popularized in the field of aluminum alloy casting production on large scale.

Description

technical field [0001] The invention relates to a preparation method of aluminum alloy welding wire, in particular to a preparation method of welding wire for aluminum-magnesium alloy castings. Background technique [0002] Aluminum alloy has low density, high plasticity, excellent electrical conductivity and thermal conductivity, and its surface can form a dense oxide film protective layer, which has good corrosion resistance in the atmosphere. The aluminum-magnesium alloy castings made by adding magnesium alloy elements on the basis of pure aluminum and strengthening by heat treatment have good comprehensive mechanical properties and seawater corrosion resistance, and are widely used in military, industrial, transportation and other fields, such as for Main load-bearing components for casting ships, marine aircraft and offshore equipment in the field of shipbuilding and ocean engineering. [0003] At present, most high-performance aluminum-magnesium alloy castings are sti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/24B23K35/40C22F1/047
CPCB22C9/24B23K35/40C22F1/047
Inventor 陈强赵春柳万元元沈闯林晓晖柴舒心段文娟赵祖德
Owner NO 59 RES INST OF CHINA ORDNANCE IND