所谓超硬合金是指硬度仅次于金钢石的合金。利用其硬度和耐热性,可制作切削铁以外的金属切削工具,岩石掘进工具,兵器装甲等。这种超硬合金约60年前开始生产,在从事这一制造业的工人中出现了咳嗽、咳痰、喘鸣、气喘、胸郎紧束感等症状以及肺功能障碍、胸部X线表现异常等并发现这些情况与接触有关。最初将这些症状总称为超硬合金病(hard metal disease)。但是,终于搞清了这种超硬合金病包括两种不同的疾病范畴。一种是明显的职业性哮喘,另一种则多伴有巨细胞性间质性肺炎(GIP)病理改变的肺纤维化。关于职业性哮喘, The so-called super-hard alloy hardness is second only to the diamond alloy. Using its hardness and heat resistance, it is possible to make metal cutting tools other than cutting iron, rock-cutting tools, and armor and armor. The cemented carbide began to be produced about 60 years ago and showed signs of coughing, expectoration, wheezing, wheezing, chest tightness, and lung dysfunction among workers in the manufacturing industry, with abnormal chest X-ray findings Etc. And found that these situations and contacts. Initially these symptoms are collectively referred to as hard metal disease. However, finally figured out this kind of cemented disease includes two different disease areas. One is obvious occupational asthma, the other is more accompanied by pathological changes of giant cell interstitial pneumonia (GIP) pulmonary fibrosis. On occupational asthma,