HMD flame hardening steel quenching temperature range is very wide, 850 ~ 1000 ° C, quenching in the temperature range of about 150 ° C, can obtain satisfactory results, so adapt to manual operation quenching, you can use oxyacetylene spray gun or other heaters, air cooling quenching after heating, after quenching can be used directly. Therefore, it has high hardenability, high surface hardness after air cooling, good performance of the heart, and small quenching deformation.

Common Specification
40-200 x 200-610mm

Surface requirement
No coating, smooth surface, no trachoma, no crack, no repair, no welding, both ends of the sawing without rough edges

Condizione di consegna
EF+LF+VD, forging, annealing <=235HB, Black/Milling

Smelting Method
Electric furnace + refining + vacuum degassing

Eutectic Carbide
According to GB/T14979-1994, ≤ grade 4

Inspection Requirements
According to SEP 1921-84 D/d grade can be handed over

Applicazioni
1. For manufacture cold working molds, such as shear knife molds, stamping molds, cold stamping molds
2. For cutting, cold turning and cold extrusion in metal processing
3. For manufacture various tools, such as cutters, drills, screwdrivers
4. For manufacturing mold parts, mold base, mold stand