Carbide Turning Inserts forStainless Steel Heavy Turning with High Metal Removal Rate

Application:

• Suitable for heavy-duty turning of large parts of stainless steel and alloy steel.
• Large depth of cut, feed, high metal removal rate.

Technical Information:

• Stainless steel is an alloy material with a chromium content of not less than 12%. Other alloying elements may include nickel and molybdenum.
• When the stainless steel is machined, the cutting edge generates a lot of heat, which is prone to groove wear and built-up edge.
• The cutting process of stainless steel varies depending on the alloying elements of the material, heat treatment and processing (forging, casting, etc.). Generally, machinability decreases as the alloy content increases, but materials that are easy to cut or have improved machinability are present in all types of stainless steel.
• For turning, stainless steel can generally be divided into three categories:
  • Austenitic stainless steel
    • Material classification: M1.x and M2.x
    • Austenitic stainless steel is the most common type of stainless steel.
    • This type of stainless steel also includes so-called super austenitic stainless steel, that is, stainless steel with a nickel content of more than 20%.
    • Austenitic stainless steels are recommended to always use coolant to reduce crater wear and plastic deformation, and try to use a large insert radius.
    • Cutting hardening often causes the groove to wear at the depth of the cut, causing burrs on the part. A round blade or a small lead angle is recommended.
    • Bonding trends, built-up edge is also a common type of wear, both of which have an adverse effect on surface quality and tool life. A sharp cutting edge and a positive rake insert are recommended.
  • Ferritic/martensitic stainless steel:
    • Material classification: P5.x
    • Ferritic and annealed martensitic stainless steels have similar machinability to low alloy steels.
    • Sometimes hardened martensitic stainless steel is processed, which places high demands on the plastic deformation of the insert.
  • Duplex stainless steel (austenitic/ferritic)
    • Material classification: M3.4
    • Duplex stainless steel has a two-phase structure containing ferrite and austenite.
    • For duplex stainless steels with high alloy content, use names such as advanced or super duplex stainless steel.
    • In terms of heat generation, cutting force and cutting control, the higher the mechanical strength, the harder the material is to be machined.
    • The common types of wear for duplex stainless steels are flank and crater wear, plastic deformation, cutting impact and grooves.
    • Use a chipbreaker with high edge strength to withstand high cutting forces.
    • Use small lead angles to avoid groove wear and burr formation.
    • It is recommended to always use coolant to reduce heat.

Feature Advantage:

• Performance and longevity reach the level of mainstream brands in Japan, Korea and Europe.
• Considering the performance of different stainless steel materials, it has been verified by a large number of customer applications through excellent chipbeaker design, ideal coating and professional surface treatment technology.

• Chipbreaker HMR:
  • Suitable for heavy-duty turning of stainless steel and alloy steel with a depth of cut of 5-15 mm.
  • Strong blade structure to ensure the reliability of the blade turning process.
  • Double front angle design ensures the cutting edge strength while cutting lightly and can control iron filings well.
  • Strict quality control system to eliminate blade edge defects and stable quality.

• Grades:
  • Good toughness and excellent high temperature resistance.
  • Special coating treatment technology, the coating and matrix are more firmly bonded.

• Types:
  • CNMM2509, SNMM2509, RCMX3207 and other heavy-duty turning specifications.

Recommended Cutting Parameters:

• The following cutting parameters are the recommended range values. Appropriate adjustments and selections should be considered after considering the following factors:
  • Specific physical properties of the material being processed
  • The actual condition of the part blank
  • Power and rigidity of the machine tool
  • Clamping rigidity of tools and workpieces
  • Balance between tool life and machining efficiency