天津发电设备厂热焊小组是全国群英会的先进集体之一。这个组在今年头9个月中,大大小小总共实现了技术革新1455项,完成了26个月的工作量。在节约材料方面,他们创造了不用化学原料的快速固体渗碳剂(木炭60％、电石25～30％、醋15～10％),加热到900～950℃、2.5～3小时,但要用炉子烘干,后来改用碳酸钠25～30％代替电石,渗碳层深达1毫米,效率提高一倍。用醋代替 Tianjin Thermal Power Equipment Factory’s thermal welding team is one of the advanced collectives of the National Majestic Association. In the first nine months of this year, the group achieved a total of 1455 technological innovations, a total of 26 months of work. In terms of saving materials, they created fast solid carburizing agents (60% charcoal, 25 to 30% calcium carbide, 15 to 10% vinegar) that do not use chemical materials, and heated to 900 to 950°C for 2.5 to 3 hours. The oven was dried and later replaced with calcium carbonate 25 to 30% instead of calcium carbide, the depth of the carburized layer was 1 mm, and the efficiency was doubled. Replace with vinegar