Composite build-up welding manufacturing method with corrosion resistant gasket welded to end part of flange
A technology for welding gaskets and manufacturing methods, which is applied in the field of composite surfacing welding manufacturing of anti-corrosion gaskets at the end of flanges, can solve problems such as poor anti-corrosion treatment effects, reduce welding deformation, improve welding efficiency, and meet The effect of anti-corrosion performance requirements
Inactive Publication Date: 2019-04-30
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem in the prior art that the effect of anti-corrosion treatment is not good by spraying anti-corrosion coating on the end face of the flange, and to provide a composite surfacing manufacturing method for welding anti-corrosion gaskets at the end of the flange. Flange gaskets are evenly arranged in the circumferential direction on the end surface of the flange sealing surface. By welding the gaskets with the base metal, a layer of corrosion-resistant alloy is added on the surface of the flange base material to meet the corrosion resistance of the flange sealing surface. requirements, and at the same time achieve the purpose of reducing welding workload, reducing welding deformation, and reducing production costs
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[0017] As shown in the figure, the specific implementation method is as follows:
[0018] This embodiment is to carry out welding processing for the material of flange 1Q345R and the material of elliptical head 2Q345R, such as figure 1 As shown in , first weld the Q345R flange 1 welded with the Q345R elliptical head 2,
[0019] A composite overlay welding manufacturing method for welding anti-corrosion gaskets at flange ends, comprising the following steps:
[0020] Step 1. Take the flange 1 to be welded with the gasket for rough machining, and process a flange with a diameter of D at the end of the flange where the gasket 3 needs to be installed. 1 Depth is H 1 A concave hole, a through hole through the flange is processed at the center of the concave hole, the diameter of the through hole is D 2 The closure of the via hole is H 2 According to the final product size of the gasket welded on the flange, a machining allowance of 3-5mm is reserved, and chamfering is performed...
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Abstract
The invention relates to a composite build-up welding manufacturing method with a corrosion resistant gasket welded to the end part of a flange. The composite build-up welding manufacturing method with the corrosion resistant gasket welded to the end part of the flange comprises the following steps that step 1, rough machining is conducted on the fetched flange, and the gasket is waited to be welded to the flange; step 2, the gasket to be welded with a right size is selected according to the size of the flange; step 3, the gasket to be welded is welded to the flange; and step 4, final formingmachining is conducted on the flange. According to the composite build-up welding manufacturing method with the corrosion resistant gasket welded to the end part of the flange, the method of compositebuilt-up welding conducted on the flange gasket and a flange sealing surface is adopted, the requirement of corrosion resistant performance is met through the flange gasket welding, meanwhile the welding efficiency is effectively improved, welding deformation is reduced, energy source is saved, and waste of welding materials is reduced.
Description
technical field [0001] The invention relates to the technical field of anti-corrosion treatment and processing and manufacturing of flanges, in particular to a composite surfacing manufacturing method for welding anti-corrosion gaskets at the ends of flanges. Background technique [0002] As a key equipment in the ballast water management system, the automatic backwash filter will directly affect the normal operation of the entire ballast water management system. When the automatic backwash filter is running, the filter medium is seawater, and the shell part in contact with seawater is mainly sprayed with anti-corrosion coating for anti-corrosion treatment. For components completely immersed in seawater, alloy steel with better seawater corrosion resistance is used Carry out anti-corrosion treatment. However, for some matching assembly surfaces, bumps are prone to occur during assembly or disassembly, and anti-corrosion coatings are not effective for anti-corrosion treatmen...
Claims
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IPC IPC(8): B23K9/04B23K9/32
CPCB23K9/04B23K9/32
Inventor 李洪波邓光平王宾宾王要伟郭雨菲张辉
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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