China's imports of metal cutting machine tools
Chisels are classified in different shapes according to different uses:
Flat chisel: the cutting edge is flat, the cutting edge and the chisel body is an inverted isosceles triangle, mainly used for opening square holes or repairing some square holes;
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In 2011, China's total import volume was US$20.29 billion, a year-on-year increase of 29.3%. Among them, imported metal processing machine tools were 13.24 billion US dollars, accounting for 65.3%, an increase of 40.6%. It is understood that in terms of instruments and bearings, due to the lack of high-end materials such as special steel in China, the import volume from Japan is also large. Therefore, Japan ranks first in the country of import of metal processing machine tools in China, accounting for 40.6 of the total import value of metal processing machine tools. %. Germany, Taiwan and South Korea rank second to fourth, and four countries and regions together account for 79.5% of total imports.
Oblique chisel: the blade is 45° Angle, the blade and chisel body is an inverted right triangle, mainly used for repair, most of the dead corners for carving and carving repair;
Gouge: the cutting edge is semicircular, mainly used for opening circular or elliptical holes;
U type chisel: the cutting edge is U-shaped, which is rare now, mainly used for carving and repair;