湘潭矿业学院机电厂经过连续多次试验研究,将切草刀堆焊铸造碳化钨,硬度由原来的HRC63提高到HRC83。同时培训了湖南省23个县市国营造纸厂的焊接学员。实际使用证明,堆焊后的切草刀完全适应切料要求,延长了连续使用时间10～15倍,使废旧切草刀能重复使用。 Xiangtan Mining Institute after several continuous mechanical and electrical power plant research, the cutter will die-casting tungsten carbide, hardness increased from the original HRC63 to HRC83. At the same time training in 23 counties and cities in Hunan Province State-owned paper mills welding students. Practical proof of use, after surfacing cut grass knife fully meet the cutting requirements, extending the continuous use of time 10 to 15 times, so that the old grass cutter can be reused.