JPS55139150A - Free cutting method for mold equipped molten metal level detector - Google Patents

Abstract

PURPOSE: To enable to measure a sufficient free cutting size, by carrying out free cutting after putting the filling material having the same form, dimension and quality as the old insertion hole in the above hole, at the time of exisisting the old insertion hole within a necessary cutting dimension corresponding to the roughness of inner surface.

CONSTITUTION: The insertion hole 2 of level detector is provided on the mold 1. When free cutting of the inner surface 3 of the mold 1 is carried out and new inner surface is placed at the position shown as the dotted line 31 and as a result of it, the distance d₁ from the surface 31 to the hole 2, is shortened and responsing property of the level detector is changed, the insertion hole 2' is provided at the position of the distance d' having the same distance d between the face 3 and the hole 2 before the cutting. Then, the filling material 21 having the same form and dimension as the hole 2 and the same quality to the mold 1, is inserted in the hole 2. Hereby, the insertion hole is not exposed even when the cutting is made progress and the cutting dimension l is able to lengthen and also, rise of running cost of the mold is able to restrain.

COPYRIGHT: (C)1980,JPO&Japio