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Explosive welding machining method for stainless steel magnesium alloy composite plates

A technology for explosive welding and magnesium alloy plates, which is applied to metal processing equipment, welding equipment, welding/welding/cutting items, etc., can solve problems such as brittle cracking, and achieve the effect of reducing area area, efficient connection and low manufacturing cost

Active Publication Date: 2017-06-13
SHANXI YANG MEI CHEM IND MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Explosive welding is suitable for the production of homogeneous or dissimilar metal clad plates, but materials with poor toughness are prone to brittle cracks during explosive welding

Method used

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  • Explosive welding machining method for stainless steel magnesium alloy composite plates
  • Explosive welding machining method for stainless steel magnesium alloy composite plates
  • Explosive welding machining method for stainless steel magnesium alloy composite plates

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 2

[0041] (1) Select AZ31B magnesium alloy plate and 316L stainless steel plate as the base material for explosive welding; and anneal and toughen the AZ31B magnesium alloy plate, the annealing temperature is 300°C, and the holding time is 120min;

[0042]AZ31B magnesium alloy plate: 950mmX550mmX8mm;

[0043] 316L stainless steel plate: 1000mmX600mmX2mm;

[0044] (2) Use mechanical grinding to remove the oxide layer and impurities on the interface between the AZ31B magnesium alloy plate and the 316L stainless steel plate to be bonded: that is, use an angle grinder equipped with a grinding wheel and a wire brush to initially grind the interface between the stainless steel and the magnesium alloy to be bonded, Then use 600-mesh sandpaper to polish, so that the roughness Ra of the surface to be bonded does not exceed 2 μm, and then wipe the surface to be bonded with a dry cloth.

[0045] (3) Explosively weld the treated AZ31B magnesium alloy plate and 316L stainless steel plate: th...

specific Embodiment approach 3

[0050] (1) Select AZ31B magnesium alloy plate and 304 stainless steel plate as the base material for explosive welding; and anneal and toughen the AZ31B magnesium alloy plate, the annealing temperature is 300°C, and the holding time is 120min;

[0051] AZ31B magnesium alloy plate: 750mmX700mmX8mm;

[0052] 304 stainless steel plate: 800mmX750mmX3mm;

[0053] (2) Use mechanical grinding to remove the oxide layer and impurities on the interface between the AZ31B magnesium alloy plate and the 304 stainless steel plate to be bonded: that is, use an angle grinder equipped with a grinding wheel and a wire brush to initially grind the interface between the stainless steel and the magnesium alloy to be bonded, Then use 600-mesh sandpaper to polish, so that the roughness Ra of the surface to be bonded does not exceed 2 μm, and then wipe the surface to be bonded with a dry cloth.

[0054] (3) Explosively weld the processed AZ31B magnesium alloy plate and 304 stainless steel plate: that...

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Abstract

The invention discloses an explosive welding method for stainless steel magnesium alloy composite plates, and belongs to the field of manufacturing technologies for composite plates. Composite layers of the stainless steel magnesium alloy composite plates are made of stainless steel, and base layers of the stainless steel magnesium alloy composite plates are made of magnesium alloy. The explosive welding method includes carrying out explosive welding by the aid of expanded ammonium nitrate mixed explosive which is used as an explosive energy source; annealing magnesium alloy plates before explosive welding is carried out, mechanically polishing to-be-bonded surfaces of the stainless steel and the magnesium alloy plates, mounting explosive devices on soil foundations, laying rubber layers on the foundations and remotely detonating the expanded ammonium nitrate mixed explosive by the aid of electric detonators. The explosive welding method has the advantages that the explosive welding method is easy to implement and is economical; the interface bonding rate is 100%, the interface bonding strength is 130.0 Mpa, and accordingly the explosive welding method is a feasible method for manufacturing the stainless steel magnesium alloy composite plates.

Description

technical field [0001] The invention belongs to the technical field of composite plate preparation, in particular to the composite of stainless steel and magnesium alloy. Background technique [0002] The inherent low plastic deformation ability, strong surface notch sensitivity, and poor corrosion resistance of magnesium alloys make the application of magnesium alloys relatively limited compared with many metal materials. [0003] At present, methods for improving the surface corrosion of magnesium alloys include electroplating, chemical plating, thermal spraying and other methods to add metal coatings to magnesium alloys to improve the corrosion resistance of magnesium alloy substrates. The above operations are complicated, and the coating is thin, and the bonding strength between the coating and the magnesium substrate is low, and the mechanical properties of the magnesium alloy substrate are not improved. [0004] Stainless steel is a high-alloy steel that can resist co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08B23K20/227B23K20/24
CPCB23K20/08B23K20/227B23K20/24B23K2103/05B23K2103/15
Inventor 李岩吴志生刘翠荣赵菲范祎欣
Owner SHANXI YANG MEI CHEM IND MACHINERY
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