Oxygen-acetylene brazing clamp for air filtration

Abstract

An oxygen-acetylene brazing clamp for air filtration comprises supporting frames, part clamping blocks, a rotating pin shaft, sleeves and an elastic steel wire. The number of the supporting frames is two, the supporting frames are connected in a crossed manner through the rotating pin shaft from the middles, and the two supporting frames can rotate around the rotating pin shaft; the two part clamping blocks are symmetrically and fixedly installed at the upper ends of the two supporting frames correspondingly; and the two sleeves are symmetrically and fixedly installed at the lower ends of the two supporting frames respectively, and the elastic steel wire is fixedly installed between the two sleeves. The oxygen-acetylene brazing clamp solves the problems that an air filtration part is small in size, the oxygen-acetylene brazing temperature is high, and the part is not easy to fix; through grooves are formed in the two part clamping blocks, the welding seam width can be effectively controlled during welding, and the part welding seam consistency is good; and in addition, the clamp is simple in structure and easy to operate, the clamp has a certain physical cooling function in the welding process, a welding heat affected area can be well controlled, and the welding quality of the air filtration part is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of aviation parts processing, and relates to an air filter oxygen-acetylene brazing processing technology. Background technique [0002] Air filters are widely used in aero-engines, and their function is to filter the air passing through the engine intake duct. The air filter is composed of 0Cr18Ni9 (flat) 0.5 / 0.224B (filter) + 1Cr18Ni9Ti (skeleton) material, welded by oxygen-acetylene brazing, using HLAgCd26-17.5-16.2-0.3 silver-based solder, due to the special structure of the part , it is difficult to control the size of the weld seam during the welding process, and the parts are thin-walled parts. During the welding process, defects such as weld leakage, burn-through, and overheating are prone to occur, and the parts are out of tolerance and scrapped. High, the welding seam is not easy to track, it is difficult to complete the welding at one time, and it is easy to cause poor molding consistency, and th...

AI Technical Summary

Problems solved by technology

The air filter is composed of 0Cr18Ni9 (flat) 0.5 / 0.224B (filter) + 1Cr18Ni9Ti (skeleton) material, welded by oxygen-acetylene brazing, using HLAgCd26-17.5-16.2-0.3 silver-based solder, due to the special structure of the parts , it is difficult to control the size of the weld seam during the welding process, and the parts are thin-walled parts. During the welding process, defects such as weld leakage, burn-through, and overheating are prone to occur, and the parts are out of tolerance and scrapped. High, the welding seam is not easy to track, it is difficult to complete the welding at one time, and it is easy to cause poor molding consistency, and the overheating of the welding heat-affected area will lead to a decrease in the strength of the filter and reduce the service life of the parts, so the welding process and after welding need to be adjusted Timely cooling of parts

The current processing technology is still unable to cool the parts in real time during the welding process. Therefore, it is urgent to develop a fixture for oxygen-acetylene brazing of the air filter, which can cool the parts in real time during the welding process. Guarantee the Welding Quality of Oxygen-acetylene Brazing of Air Filter Parts

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