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理想中的电烙铁应当是:①无预热时间,拿起可用,放下即断电停止工作。②耗电少。③温度基本恒定,并能随时任意调整,无需等待。④焊接时温度高,焊锡流动性好,润湿性好,填缝性好,焊接质量好。由于温度高易损坏元件、线路板等,操作困难,冶金反应强烈,烙铁寿命较短。焊接时温度低则相反。为了两者兼顾,通常只好选择中间温度(250℃～350℃之间),但这种选择
The ideal electric iron should be: ① no warm-up time, picked up available, put off the power to stop working. ② less power consumption. ③ temperature is basically constant, and can be adjusted at any time, without waiting. ④ high temperature welding, solder flow is good, good wettability, good sealant, welding quality. Due to the high temperature easily damaged components, circuit boards, etc., difficult to operate, metallurgical reaction strong, shorter iron life. Welding temperature is low on the contrary. In order to balance the two, usually have to choose the middle temperature (250 ℃ ~ 350 ℃), but this choice