Do you know the role of chromium element in steel?
1, high C steel + Cr and with Mo elements, can improve the hardness and wear resistance of steel, good surface finish quality, such as 9Cr3Mo.
2, due to the interaction between Fe-C-Cr three, by the preparation and thermal processing of different organizations obtained, can make the mold steel has different properties.
3, Cr in steel and other elements of the integrated role of Cr on the impact of steel. cr and Fe to form a continuous solid solution; can form intermetallic compounds б phase (FeCr), Cr + C to form a variety of carbides; and C affinity greater than Fe and Mn, and less than W and Mo
4, stainless steel and heat-resistant steel, Cr ≥ 12%, to further promote the formation of passivation film on the surface of the mold steel, enhance the mold oxidation resistance ↑ resistance to high temperature oxidation ↑ corrosion resistance ↑, Cr and Mn, N, Ni joint use, when the need to form austenitic steel, stable ferrite Cr and stable austenite Mn and Ni, need to have a certain ratio, such as Cr18Ni9; when Cr ≥ 15%, the Strength and hardness decline, elongation and section shrinkage rise. Therefore, everything has a "degree", control the element content so that the performance of the actual use of the direction of demand is the king.
5, Cr to improve hardenability can also increase the tempering stability of the mold steel.
- Special Steel Industry Chain for Ningshing 2023-11-23 15
- New Heat Treatment Installation 2023-11-21 21
- Ningshing Precision Machinery has been practicing the 6S management concept. 2023-11-15 13
- NINGSHING Tool Steel for Knives & Blade: For Every Precision Cut 2023-11-10 20
- The Importance of CMM in Precision Manufacturing 2023-11-08 35
- CNC Circular Sawing Machine GKL610 2023-11-06 37
- 4140 Plate--Widely used in American market 2023-11-03 46
- Plastic mold steel-420mod 2023-10-27 28
- 1.2379 cold work tool steel 2023-10-26 36
- Electric Vehicle 2023-10-17 32
- The main causes and preventive measures of hot cracks 2023-10-16 36
- HMD flame hardening steel 2023-09-28 39
- Principle of mold processing reservation allowance 2023-09-18 54
- DIN 1.2311 Plastic Mold Steel 2023-09-15 45
- Selection and Heat Treatment of Die Casting Mold Materials 2023-09-08 66
- Cold work tool steel-1.2510 / O1/SKS3 2023-09-07 54
- Tooling classification 2023-09-01 47
- Die steel -1.2738/1.2738HH 2023-08-24 56
- Mold processing accuracy requirements 2023-08-14 66
- The main causes of thermal cracks and preventive measures 2023-08-08 68