What kind of cutting tools are usually used in cast iron processing?
Type and processing characteristics of cast iron
CAST iron according to its classification can be divided into: Gray cast iron, White cast iron, Malleable cast iron, Ductile Iron, vermicular cast iron, Alloy cast iron and so on. Gray cast iron is widely used in the automotive industry, and the automotive industry is the demand for NC tools, so often processing plants have gray iron processing needs.
What kind of cutting tool is used to process common cast iron
In this paper, the common cast iron is gray iron, ductile iron and AUSTENITE CAST IRON, gray iron processing performance is good, such as the use of alumina coating carbide milling cutter, mostly competent for gray iron cutting. Because of the influence of graphite content on the workability of SPHEROIDAL graphite cast iron, the economical coated alloy milling cutter with integral hard alloy bar can be used.
The ordinary cast iron processing tool, the economical tungsten steel milling cutter can be competent. Secondly, high-speed steel cutting tools containing cobalt can be used.
What kind of cutting tools are used for difficult-to-process cast iron
COLD-HARD CAST IRON, cold-hard cast iron is a kind of wear-resistant cast iron, it is in the cast iron by accelerating the surface layer of cast iron cooling to wait for a while, so that its surface layer to obtain an encyclopedia of cast iron structure, forming a high hardness, high wear-resistant characteristics. Chilled cast iron can be divided into ordinary chilled cast iron, NI-CR chilled cast iron, high chromium white iron and chromium-vanadium white iron and so on.
1) machining characteristics of chilled cast iron
The hardness of chilled cast iron is very high, the Brittleness is very big, the unit cutting force is also very big, and its chip is in a crumbled shape, because the tool tip is in contact with the cutting, the cutting force and the cutting heat are concentrated near the cutting edge, easy to make the tool wear and tear. The processing of chilled cast iron is mostly rough, and the machining allowance is large and uneven, which increases the difficulty of cast iron processing. Of course, the current cast iron processing tools, cast iron milling cutter, and so have a very good solution.
2) selection of cutting tools for machining chilled cast iron
The best choice for processing cold-hard cast iron is high hardness, wear resistance, with a certain strength of the tool material. Generally, YG type cemented carbide or alumina ceramic tools with fine or ultra-fine grain coating are used.
3) the cutting quantity of cold hard cast iron milling cutter
Carbide tools; large feed at low speed. V = 9m/min, feed volume generally according to the main deflection angle and back to eat knife to choose. 0.5 MM/R for rough machining and 0.1ー0.4 mm/r for finish machining of cast iron.
High-speed milling, rough and semi-finished CAST IRON V = 50 ~ 80m/min, and finish machining V = 80 ~ 120m/min.
CAST iron processing tools, such as knife grain, can be coarse, semi-fine and finishing. If you do not know what to use cast iron milling cutter, Processing Cast Iron Milling Cutter is of course to choose type YG carbide cutter.
