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    • 6. 发明授权
    • Cladding method by a laser beam
    • 激光束包层法
    • US5912057A
    • 1999-06-15
    • US896835
    • 1997-07-18
    • Kimio NishimuraHidenobu Matsuyama
    • Kimio NishimuraHidenobu Matsuyama
    • F02F1/00B23K26/00B23K26/04B23K26/34C23C24/10C23C26/02C23C24/00
    • B23K26/34B23K26/32B23K35/002B32B15/017C23C24/10C23C26/02B23K2203/10B23K2203/12B23K2203/18
    • In a cladding method for covering a surface of a base metal with a metal for coating by using a processing apparatus for supplying a levigated coating metal together with irradiating a laser beam, in a first step, a first layer of cladding is formed on a surface of the base metal, and in a second step, a second layer is formed on a cladding starting portion in the first layer in an overlapping manner. In the second step, the processing apparatus is moved to an upper position which is more apart from the base metal than in the first step. In the above manner, since the processing apparatus forms the second layer of cladding with moving the processing apparatus upward, a processing point is moved upward together with motion of the processing apparatus. As a result of this, a generation of a defect in an overlapping portion of the cladding and a neighborhood thereof can be prevented.
    • 在一种用于通过使用用于向照射激光束供应被引导的涂层金属的处理装置来覆盖基体金属的表面的包覆方法中,在第一步骤中,在表面上形成第一层包层 并且在第二步骤中,第二层以重叠的方式形成在第一层中的包层起始部分上。 在第二步骤中,处理装置移动到与第一步骤相比离开贱金属更远的上部位置。 以上述方式,由于处理装置通过向上移动处理装置而形成第二层包层,所以处理点随着处理装置的运动而向上移动。 结果,可以防止在包层的重叠部分及其附近产生缺陷。
    • 10. 发明授权
    • Laser hardening device
    • 激光淬火装置
    • US5313042A
    • 1994-05-17
    • US892886
    • 1992-06-03
    • Hidenobu MatsuyamaKimihiro ShibataHiroki Sakamoto
    • Hidenobu MatsuyamaKimihiro ShibataHiroki Sakamoto
    • B23K26/06B23K26/14C21D1/09B23K26/00
    • B23K26/0643B23K26/1438B23K26/147C21D1/09
    • A laser hardening device for forming a hardened layer on the surface of an object irradiated by a laser beam is so arranged as to emit a laser beam which is linearly polarized in the incidence plane containing the normal to the surface and the optic axis of the laser beam irradiating the surface. The device comprises a first concave mirror for condensing the laser beam the incidence plane, and a second concave mirror for condensing the laser beam in a perpendicular plane to the incidence plane, the first concave mirror being disposed closer than the second concave mirror to the laser oscillator in the path of the laser beam. Laser beam is therefore absorbed at a high absorption rate by the object, and a hardened layer is formed without coating a laser absorption agent onto the object. The incidence angle of the laser is preferably no less than 60 degrees, and by arranging that the laser beam is parallel on the irradiated surface, a uniform, hardened layer is obtained. Moreover, by blowing shield gas on the irradiated surface from a gas nozzle provided with a smoothing mechanism such as metal mesh, oxidation of the hardened layer or surface melting due to oxidation is prevented and a more desirable hardened surface is obtained.
    • 用于在被激光束照射的物体的表面上形成硬化层的激光淬火装置被布置成发射在包含激光的表面和光轴的法线的入射平面中线性偏振的激光束 光束照射表面。 该装置包括用于将激光束聚焦入射平面的第一凹面镜和用于将激光束在与入射平面垂直的平面中聚光的第二凹面镜,第一凹面镜被设置成比第二凹面镜更靠近激光 振荡器在激光束的路径中。 因此,激光束以物体的高吸收率被吸收,并且形成硬化层而不在激光吸收剂上涂覆物体。 激光的入射角优选为60度以上,通过将激光束平行配置在照射面上,得到均匀的硬化层。 此外,通过从设置有金属网的平滑机构的气体喷嘴在被照射的表面上吹扫保护气体,防止了由于氧化而导致的硬化层的氧化或表面熔融,并且获得了更理想的硬化面。