Stainless Steel Turning

Stainless Steel Turning-About Stainless Steel Turning:

The latest material and turning inserts for steel turning chipbreakers provide higher capacity in the industry widely used stainless steel for the tool industry, presented a huge challenge, turning in the development of new materials and chip-breaking groove blade must consider them machinability. A group in the chemical, food, paper and pulp industry in the corrosive environment to provide a long service life quite easy to cut the stainless steel materials are increasingly used. These materials usually provide good corrosion resistance of chromium-based iron or carbon steel. Other groups with different proportion of chromium and nickel in stainless steel material with high tensile strength but also the need for corrosion-resistant aerospace industry. They range from the difficulty of processing such as low-nickel alloys to high-temperature alloys are difficult to process.

Although the processing of stainless steel upper and lower large, they are very sticky, sticky back on the cutting tool produces chips, BUE and the resulting coated particles and even the Ministry of coating and the substrate with the particles 'pull out' other potential the problem. However, the major cutting tool companies have been in line for today's latest core design of carbide and chip-breaker consider these failure modes, and by extension to provide turning blades. Now cut to a medium for mass production and easy processing of difficult economic range of stainless steel is easy to get good solutions.
Stainless Steel Turning-According toughness carbide
Seco Tools is targeted at a wide range of processing conditions and applications, including near-final shape and stainless steel, designed to improve performance in the core of turning the new series of complete material cutting tool suppliers. In Carbide, the company completely restructuring its high mountains and their processing for general purpose and heavy rough TP300 TP200 turning the core material and the underlying substrate to provide better adhesion between the coating and toughness better cutting edge. There are two kinds of material cobalt-rich region in the substrate is coated by the titanium carbonitride TiCN, Al2O3 and aluminum titanium nitride TiN composite coating.
Fixed according to product manager Carboloy Bob Goulding, after the reorganization of the material to provide improved processing of stainless steel for important features. They contain can effectively resist the pull of the toughness of a good anti-stick coating and better BUE debris and smooth the top surface hard coating.
Goulding said that through the coating deposition process - the temperature chemical vapor deposition coating at lower temperatures and good progress has been smooth coating toughness, leading to long life. He explained, 'the warm thick CVD coating process to retain all of the hardness and wear resistance, toughness gave you a better and more smooth coating to minimize cracking. '
Although general and heavy rough material containing both good toughness have cobalt-rich region of the matrix, the matrix toughness and wear resistance of the coating ratio is different. According to Goulding, TP200 coating material at high cutting speeds to provide superior wear resistance, and toughness of the matrix material TP300 better, so at a lower speed when processing high-strength stainless steel capacity. 'Our heavy rough texture of the matrix toughness are particularly good, with thick MTCVD coating, making the cutting edge of your hard and good toughness,' Goulding said. 'You get cutting edge grooves with outstanding wear resistance and effective wear resistance. 'Based on these characteristics, Goulding recommended for general purpose material TP200 ferritic stainless steel easy to cut the high-speed cutting, and TP300 difficult to process materials for medium-high-strength stainless alloys of low-speed applications.
Stainless Steel Turning-Chip-breaker design solutions
According to Goulding, for stainless steel machining chip breaking trough the correct model will have high mountains and the company after the reorganization of the core 'M3' groove cutting for light to medium load. Steel finish can be used for this trough and after the reorganization of the core 'MF2' trough designed to change negative chamfer width and angle to provide a small depth of cut, including high feed a wide range of applications in the effective required for chip breaking cutting edge strength. Increase cutting edge strength at high feed, helped to shape the application of stainless steel and close to the final cut deep grooves to control wear.
Throughout their range of applications, the new groove design also provides better tool life. A contributing factor is the positive cut angle, it promotes freer cutting and reduce chip temperature. Another is the chip control point of view, it is strategically placed on the tip of the 'bulge part of the' chip-breaker instead of a hard platform to control the chip required for chip breaking curling. Direct pressure of the chip and the blade will help to uplift the exposure limit to a mere two points: cut corners and cut out the corner uplift themselves. As a result, the heat transfer to the blade and the cutting force reduced, improving tool life. Contact point between the two is quite wide, so any carbide by the chip and rake surface chemical reaction with diffusion wear will not grow and cause early failure of the blade.
Goulding pointed out that several of these design features can clearly improve the use of light to the processing of stainless steel trough containing M3 performance. For example, the chip to reduce the contact point to help reduce the sticky crumbs, and are cut into the angle of the welding material reduction in stress or in the chip-breaker BUE, to prevent possible coating and carbide materials 'pull'. In addition, the cut angle is to reduce the surface hardening of help, especially for multiple return of stainless steel processing. One consequence of this hardening is cut deep grooves wear, but when the chip-breaker in M3 as from the beginning of the cutting edge tip strength and therefore minimal impact.