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Method for welding shell belt by argon arc build-up welding with different copper double wires

A shell and heterogeneous technology, applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problems of poor bonding strength between the elastic belt and the projectile body, poor weld formation, etc., to achieve increased strength, good weld formation, The effect of increased lethality

Inactive Publication Date: 2006-08-16
HARBIN INST OF TECH
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Problems solved by technology

[0003] In order to solve the poor bonding strength between the elastic band and the elastic body existing in the welding structure of the existing artillery shell body, the present invention adopts a single brass welding, and the zinc contained in the brass welding wire volatilizes in the welding body of the elastic band during the welding process. To solve the problems of air holes and poor weld formation, a method of using heterogeneous copper double-wire argon arc surfacing to weld shell belts is proposed. The steps of the specific technical solution to solve this problem are as follows:

Method used

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  • Method for welding shell belt by argon arc build-up welding with different copper double wires

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specific Embodiment approach 1

[0009] Specific implementation mode one: the steps of this implementation mode are as follows:

[0010] Step 1. Select red copper welding wire and brass welding wire. The brass welding wire with a zinc content of 5 to 35% is selected according to the weight percentage. ~1.6mm;

[0011] Step 2. Feed the red copper welding wire and the brass welding wire to the elastic belt welding place of the shell shell interface respectively by two TIG wire feeders. The feeding ratio of copper welding wire is 65-95% for red copper welding wire and 35-5% for brass welding wire according to the weight percentage. The circular interface is welded into a circular shell belt with a wall thickness of 2-5mm and a width of 5-50mm;

[0012] Step 3: Processing the surface of the shell band welded into a circular shape through step 2 by mechanical cutting.

[0013] For the elastic belt welded by the above method, two TIG wire feeders are used to feed the wire to the welded elastic belt, which can ef...

specific Embodiment approach 2

[0014] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the red copper wire is continuously heated during the wire feeding process. The temperature of heating the red copper wire is 200-600° C., and the heating of the red copper wire can improve the welding efficiency.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in Step 2, the red copper wire is 65% and the brass wire is 35% by weight.

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Abstract

A technology for welding the band on artillery shell with welding brass wire and red copper wire by build-up argon arc welding includes such steps as providing welding red copper wire and the welding brass wire containing Zn by 5-35%, welding a ring band on the artillery shell by build-up argon arc welding of said both welding wire, and surface treating. Its advantages are high welding strength and toughness, high quality of shell band without pinholes and low cost.

Description

technical field [0001] The invention relates to a welding method for shell belts. Background technique [0002] Most of the belts of traditional large-caliber projectiles are made of brass, and there is a dovetail groove on the tail of the shell base. The copper alloy belt is embedded in the dovetail groove, and the belt and the projectile are realized by mechanical bonding. Combination of substrates. However, there are two problems: the one is that the wall thickness of the shell is uneven, and the thinner wall thickness of the dovetail groove will produce stress concentration when the shell explodes, which will become the weak link of the shell matrix, causing the explosion effect to be unsatisfactory; the other is that the cost is higher, Moreover, the mechanical combination makes the elastic belt easy to fall off. In order to solve the above problems, at present, welding methods are generally used for the connection of foreign shell belts, mainly including deposition w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K9/12B23K35/30B23K35/04
Inventor 吕世雄杨士勤王海涛张成敬薛承博
Owner HARBIN INST OF TECH
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