公开(公告)号：US3948649A

公开(公告)日：1976-04-06

申请号：US447324

申请日：1974-03-01

申请人： Tetsuo Takahashi ,  Minoru Yanagida

发明人： Tetsuo Takahashi ,  Minoru Yanagida

IPC分类号： C22C38/60

CPC分类号： C22C38/60

摘要： A free cutting steel for construction of machines, characterized in that the deoxidation product remaining in the steel has a composition of 40-60% of SiO.sub.2, 10-30% of MnO and 5-25% of Al.sub.2 O.sub.3, the balance being other oxides such as CaO and the sum of contents of SiO.sub.2, MnO and Al.sub.2 O.sub.3 being so adjusted as to be at least 85% of the whole oxides in the deoxidation products, the steel being further incorporated with 0.02 - 0.10% of Pb, and that the non-metallic composite inclusions comprising sulfides and finely divided Pb particles are uniformly dispersed.

摘要翻译： 一种用于机器结构的自由切割钢，其特征在于，钢中残留的脱氧产物具有40-60％的SiO 2，10-30％的MnO和5-25％的Al 2 O 3的组成，其余的是其它氧化物 作为CaO，将SiO 2，MnO和Al 2 O 3的含量之和调整为脱氧产物中的全部氧化物的85％以上，进一步含有0.02〜0.10％的Pb， 包含硫化物和细碎Pb颗粒的金属复合夹杂物均匀分散。

公开(公告)号：US4347080A

公开(公告)日：1982-08-31

申请号：US223034

申请日：1981-01-07

申请人： Minoru Yanagida ,  Tomio Kono

发明人： Minoru Yanagida ,  Tomio Kono

IPC分类号： C22C38/54 ,  C22C38/06

CPC分类号： C22C38/54

摘要： In austenitic free-cutting stainless steel containing lead, decrease of hot workability caused by the addition of lead can be dissolved by adding a specific amount of boron. Thus, there is obtained an austenitic free-cutting stainless steel with improved machinability, corrosion resistance and hot workability of which are maintained at the level of conventional austenitic stainless steel.

摘要翻译： 在含有铅的奥氏体自由切削不锈钢中，通过添加特定量的硼可以溶解通过添加铅引起的热加工性的降低。 因此，获得了具有改进的机械加工性，耐腐蚀性和热加工性的奥氏体自由切削不锈钢，其维持在常规奥氏体不锈钢的水平。