虽然时间继电器成本低，但若达到铜铝管焊接高质量，其时间控制精度、稳定性、可靠性等性能指标已不能满足要求。
Although it is cheap, the time-relay, with the low control precision, stability, reliability and other performance, can't satisfy the demand for higher quality of Cu-Al pipe welding.
针对薄铝管焊接过程中容易出现的问题提出了可行的解决方法。
A practicable method was put forward to solve the possible problems in course of welding.
为实现铜铝管的优质焊接，需要研制相应的焊接设备。
To realize superior welding of copper-aluminum pipe is demanded to manufacture the related welding units.
采用铝管精密成型技术，保障超声波焊接稳定可靠。
It adopts Aluminum pipe precise forming technology to guarantee ultrasonic welding steady and reliable.
在分析了铜铝管焊接工艺过程的基础上，重点论述了铜铝管对焊机执行系统和控制系统的设计。
This paper, based on analyzing the process of Cu-Al pipe butt welding, discussed the design of the executive system and control system for PLC controlled Cu-Al pipe butt welder.
铜铝管焊接的关键是对焊接参数的控制，原控制系统采用时间继电器控制焊接参数。
The key of Cu-Al pipe butt welding is to control the welding parameters. In the original control system, all welding parameters were controlled by time-relays.
实践证明，PL C控制型铜铝管对焊机的执行机构完全满足铜铝管优质焊接的要求。
In practice, the executive mechanism of PLC controlled Cu-Al pipe butt welder meets the expectation for high quality Cu-Al welding completely.
铝管精密成型技术，使超声波焊接的铝管尺寸精确、圆度好。
Aluminum pipe precise forming technology makes the ultrasonic welded Aluminum pipe size precise and roundness good.
为实现铜-铝管的优质焊接，需要研制相应的焊接设备。
Special welding equipment must be developed, to achieve Cu-Al pipe weldment in high quality.
在分析了铜铝管焊接工艺过程的基础上，重点论述了铜铝管对焊机执行系统和控制系统的设计。
The executive mechanism of Cu-Al pipe butt welder, based on above, was designed, including its air system and mating clamper.
本发明涉及一种铜铝管焊接接头、其制备方法及专用芯棒。
The invention relates to a Cu-Al pipe welding joint, a preparation method and a special core rod thereof.
由于原材料价格上涨，生产成本随之提高，制冷行业中“铝代铜”成为发展趋势。制冷管路中要有铜铝管接头，主要制造方法为焊接，其中电阻焊质量较好。
With increasing of raw material price and production cost as well, to employ aluminum pipe instead of cooper pipe in refrigeration field has become the trend.
由于原材料价格上涨，生产成本随之提高，制冷行业中“铝代铜”成为发展趋势。制冷管路中要有铜铝管接头，主要制造方法为焊接，其中电阻焊质量较好。
With increasing of raw material price and production cost as well, to employ aluminum pipe instead of cooper pipe in refrigeration field has become the trend.
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