北京砂轮厂隧辺式硬化炉始建于1959年初,是我国用于正常生产的第一条树脂砂轮隧辺式硬化炉,热沅为单控电热式,炉丝布设于加热带两侧的下部。原炉生产效率较低,硬化质量较差,且劳动强度较大。1961年磨料所和北砂合作,对炉体加热带、自动控温装置和炉车 Beijing Grinding wheel tunnel tunnel sclerosis furnace was built in early 1959, is China’s first production for the normal resin wheel tunnel sclerosis hardening furnace, hot Yuan is a single-controlled electric heating, heating wire cloth laid in the lower part of both sides of the heating zone . The original furnace production efficiency is lower, harder quality is poor, and labor intensity is bigger. 1961 abrasive and North sand cooperation, furnace heating zone, automatic temperature control device and furnace