| 摘要 |
The support or body (23) of a welding gun is made of a material highly resistant to heat and a dielectric or insulator, as well as being resistant to impact, thereby preventing the possibility of shorting internally. The gun tube (22) is of solid copper to reduce its electrical resistance and the build-up of heat when high currents are flowing, being capable of working with currents up to 400 Amperes without cooling. Externally the body of the gun (23) is fitted with a nylon washer (20) to optimise adaptation to the supporting holder in the machine. The external cooling ducts, included on the body of the gun (23), are used to inject air to suppress the spatter (17) that could build up in the nozzle and short
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