Explosive cladding method for stainless steel clad plate

A technology of stainless steel and composite plates, which is applied in the direction of non-electric welding equipment, welding equipment, metal processing equipment, etc., can solve the problems affecting the processing progress, quality and cost of composite plates, reduce the unbonded area, increase the yield, and improve Effect of Explosive Binding Rate

Active Publication Date: 2013-01-16
太原钢铁(集团)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the thickness of the stainless steel is less than 5mm, it is generally an unbonded area of ​​Φ40mm, which will not affect the overall compounding rate of the steel plate. The unbonded area reaches Φ300mm or even larger, which seriously affects the processing progress, quality and cost of the composite board

Method used

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  • Explosive cladding method for stainless steel clad plate
  • Explosive cladding method for stainless steel clad plate
  • Explosive cladding method for stainless steel clad plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The substrate, double board and technical requirements of this example

[0041] Substrate: Q235 in the national standard GB700

[0042] Length 4050mm Width 550mm Thick 90mm

[0043] Double plate: 09Cr18Ni9 stainless steel in the national standard GB4237.

[0044] Length 4100mm, width 600mm, thickness 14 mm

[0045] The method for the explosive combination of the stainless steel clad plate comprises the following steps in sequence:

[0046] Ⅰ、 match

[0047] The Q235 base plate 2 and the 09Cr18Ni9 stainless steel cladding plate 4 that meet the national standards and technical requirements are assembled according to the requirements of the final product.

[0048] Ⅱ polished surface

[0049] Use a grinding wheel or a polishing impeller to remove oxides and impurities on the explosive joint surface of the substrate 2 and the double plate 4, and the surface roughness value of the joint surface of the substrate 2 and the double plate 4 is not greater than R a 6.3μm; t...

Embodiment 2

[0061] The doubler plate of this embodiment is 30408, and the steps of the manufacturing method are the same as that of the first embodiment, and the explosive bonding rate reaches 96%.

Embodiment 3

[0063] The base plate of this embodiment is Q345R, and the doubler plate is 06Cr13Al. The steps of the manufacturing method are the same as those of Embodiment 1, and the explosive bonding rate reaches 96%.

[0064] The present invention utilizes high detonation velocity (RDS) explosive 15 to fill the energy-gathering hole 13 with a cone inside, to ensure that the detonating electric detonator 16 is stable and the density of the main explosive is uniform. Utilize the energy-gathering effect to make the energy charge package, change the detonation method of the stainless steel composite plate, and quickly form a bending angle at the detonation position to realize the welding of the stainless steel and the substrate.

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Abstract

The invention relates to an explosive cladding method for a stainless steel clad plate, successively comprising the steps of: I, matching, assembling a base plate with the stainless steel clad plate according to the demands of final finished products; II, polishing surfaces, eliminating oxides and sundries on an explosive cladding surface of the base plate and the clad plate; III, laying explosive, clearing up explosive cladding foundation by using river sand; laying the base plate; supporting the clad plate on the base plate by using a strut made of copper sheets; placing a medicine frame for preventing the explosive scattering around the clad plate; IV, manufacturing an energy-gathered aperture with a cone in the explosive; taking the centre of the clad plate as the initiation explosion position; forming the conical energy-gathered aperture at the initiation explosion position; V, vertically standing an electric detonator for explosion on the cone; adding the explosive with high detonation velocity around the conical energy-gathered aperture lightly; vertically standing the electric detonator on the cone; and VI, igniting explosive welding of the electric detonator. The cladding rate of the explosive cladding stainless steel clad plate of the clad plate reaches to 96%.

Description

technical field [0001] The invention relates to a method for explosive bonding of stainless steel composite plates, in particular to a method for explosive bonding of stainless steel composite plates of 10 mm to 14 mm in size. Background technique [0002] Explosive welding is a high-energy processing technology. It is a material processing technology that uses the detonation of explosives as energy to combine two or more layers of the same or different metal materials into an integral material (composite plate). During the explosive welding process of the stainless steel clad plate, with the increase of the thickness and strength of the doubler plate, the explosion refraction angle suitable for the explosive welding window is more difficult to form, resulting in a lower explosive bonding rate. Especially at the detonation position, it takes a certain time and distance for the explosive to spread from detonation to stable detonation. The stainless steel doubler plate has alr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K20/08
Inventor 李玉平
Owner 太原钢铁(集团)有限公司
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