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早在1993年,国内贸易部科技质量局经对比实验发现,压力锅随着使用年限的增加,锅牙磨损变薄,硬度下降,整体锅的强度也逐渐下降,耐压变形间隙增大,上述变化在压力锅使用6年后加速变快,8年后热爆模拟试验值已接近安全压力限度,如继续使用,极易出现爆锅现象。1994年,国内贸易部和轻工总会发布“压力锅不可终身服役,正常使用年限为8年”的联合公告,2002年后,推荐使
As early as 1993, the Bureau of Quality and Technical Bureau of the Ministry of Internal Trade, after a comparative experiment, found that as the service life of the pressure cooker increased, the wear and tear of the cooker became thinner and the hardness decreased. The strength of the whole cooker also gradually decreased and the pressure deformation clearance increased. In the pressure cooker to accelerate the use of six years after the acceleration, eight years after the thermal explosion simulation test value is close to the safety pressure limit, if continue to use, prone to explosion phenomenon. In 1994, the Ministry of Internal Trade and the General Administration of Light Industry promulgated the joint announcement that “the pressure cooker can not be served for life, and the normal service life is 8 years.” After 2002, it is recommended that