Product Details

Solid SNMN Cutting CBN Inserts Rough Machining High Manganese Steel Component With Large Allowance

1. The characteristics of High Manganese Steel and how to mill High Manganese Steel parts.

The surface hardness of high manganese steel is greatly improved after solution treatment or work hardening. HB300～HB400 can be achieved under low impact load, and HB500～HB800 can be achieved under high impact load. The surface hardened layer can reach a depth of 10 to 20 mm depending on the impact load. The hardened layer of high hardness resists abrasive wear. High manganese steel has excellent anti-wear performance under the condition of strong impact abrasive wear, so it is often used in mining, building materials, thermal power and other mechanical equipment to make wear parts.

2. Difficult processing problems .

(1) The work hardening of the Crushing Cone is serious, which aggravates the tool wear and is easy to cause the tool to collapse and damage;

(2) Large cutting force and high cutting temperature, resulting in reduced tool durability and variability of the workpiece, and low dimensional accuracy;

(3) Due to the high temperature and high pressure between the cutting tools and the chip, it is easy to form built-up edge and scale, which affects the surface roughness of the workpiece, and it is difficult to ensure the quality of the workpiece;

(4) Chips are not easily curled and broken during cutting, and chip removal is difficult.

3. Application

CBN grade		Workpiece
Tool type	SNMN1507	Workpiece name	Crushing Cone
Original tool	Carbide tool	Workpiece material	High manganese steel(ZGMn13)
Cutting parameters
Cutting speed(Vc)	80m/min
Feed rate(Fr)	0.3mm/r
Cutting depth(ap)	7.5mm
Cutting effect: On the base of CBN tools cutting speed is 3.2 times higher than that of cemented carbide tools, the cutting depth is 3 times that of cemented carbide tools and the efficiency of technicians is 12 times higher.