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Surface treatment method of cast steel piece and depth measurement method of melting cast steel piece
Surface treatment method of cast steel piece and depth measurement method of melting cast steel piece
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机译:铸钢件的表面处理方法和熔融铸钢件的深度测量方法
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摘要
PROBLEM TO BE SOLVED: To measure the melted depth of a cast steel billet during the melting treatment for the surface of the cast steel billet by plasma gas.;SOLUTION: When the surface of the cast billet H is heated and melted by plasma gas radiated from a plasma torch T1 while moving the cast billet H in the carrying direction B, a recess Z is formed by discharging molten metal Q from the melted portion by adjusting the flow rate of the plasma gas. Then, a laser spot S having the luminance higher than that of the plasma arc P is formed by irradiating the central portion of the recess Z with a laser beam by means of a laser radiating device 32. Then, the variation of the displacement of the laser spot S in the vertical direction is measured. The melted depth L can be measured by the vertical displacement of the laser spot S when the magnitude of the variation of the displacement has become smaller than a required value.;COPYRIGHT: (C)2008,JPO&INPIT
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