据近期日本专利报导,用低熔点合金浇固多凸模或多衬套的模具,若在使用中有凸模损坏急需调换时,不必将固定板整体加热,以免所有凸模脱落,而只要将欲调换的凸模通电,即可熔化其周围的低熔点合金,不会导致邻近凸模松动。调换凸模时,将被调换凸模的上下端面分别用导线接通电源。由于凸模本身的电阻,一通电就产生热量,并将热量传导给其周围的低熔点合金。合金被熔化,被调换的凸模即与固 According to recent Japanese patent reports, the use of low-melting alloy pouring multi-punch or multi-bushing mold, if there is a punch in use when the need for replacement is damaged, the entire fixed plate does not have to heat, so as not to fall off all the punch, To exchange the punch power, you can melt around the low melting point alloy, will not cause the adjacent punch loose. Replace the punch, the punch will be replaced by the upper and lower end face were connected to the power wire. Due to the resistance of the punch itself, heat is generated as soon as it is energized, and heat is transferred to the low-melting alloy around it. Alloy is melted, replaced by the punch that is solid