求翻译：急冷段使用管径为50mm的急冷管将制品冷却至700°C左右；缓冷段采用抽热风方式进行缓冷，管径为150mm；快冷段使用管径为50mm的快冷管进行冷却，最后1节做一个抽热罩，使制品最终冷却到80°C左右。是什么意思？

Quench segment diameter about 50mm quench tube product is cooled to 700 ° c; slow cooling section pumping hot air to slow cooling, the diameter is 150mm; rapid cooling fast diameter of 50mm pipe for cooling. the last one to do a pumping heat shields, so that the products eventually cooled to about 8

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The sharp quenching section use caliber is the 50mm sharp quenching tube cools the product to 700°C about; The slow cold section uses pulls out the hot blast way to carry on slow cold, the caliber is 150mm; The quick freezing section use caliber is the 50mm quick freezing tube carries on cooling, fi

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正在翻译，请等待...