热处理可提高材料性能,改善性能间的相互关系并增进零件的使用寿命。一片软铁经不同的化学热处理,有的可以划开玻璃,有的长期浸泡盐水不会锈蚀,有的还能经受高温而不烧毁。抽烟打火机的小磨轮最易磨损而打不出火,把它渗硼再也不愁先受损坏。元珠笔芯头上的小元珠经过离子氮化,写起来就流畅园滑,寿命也可以延长好几倍。虽然同样 Heat treatment can improve the material properties, improve the interrelationships between properties and increase the service life of the parts. A piece of soft iron by different chemical heat treatment, and some can cut open the glass, and some long-term immersion brine will not rust, and some can withstand high temperatures without burning. Smoking lighter small wheel wear the most easy to play without fire, boriding it no longer have to worry about damage. Ballpoint ball on the head of the beads after ion nitriding, smooth writing slippery Park, life can be extended several times. Same though