CN105886952A

CN105886952A - Novel steel

Info

Publication number: CN105886952A
Application number: CN201410792202.4A
Authority: CN
Inventors: 李富会
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-12-18
Filing date: 2014-12-18
Publication date: 2016-08-24

Abstract

Provided is novel steel. The novel steel is characterized by comprising, by weight, 0.77%-0.92% of C, 0.24%-0.34% of Si, 9%-10% of Cr, 0.20%-0.29% of Mn, 5%-5.3% of W, 0.8%-1.2% of Mo, 0.7%-1.4% of V, 0.9%-1.3% of Co, 0.1%-0.19% of Ni, 0.004% or less of S, 0.8%-1.4% of Nb, 0.004% or less of P, and the balance Fe. The alloy steel further comprises 0.35% or less of Ti and 0.01% or less of rare earth elements.

Description

A kind of new type steel

Technical field

The present invention is a kind of steel, particularly to a kind of novel alloy steel.

Background technology

The high speed steel material being currently used for cold-punching mould and cutting element, cutter typically uses domestic steel alloy W6Mo5Cr4V2 to make, The chemical composition of alloy is (weight %): C0.80%～0.90%, Si≤0.45%, Mn≤0.40%, W5.50%～6.75%, Mo4.50%～5.50%, Cr3.80%～4.40%, V1.75%～2.20%, S≤0.03%, P≤0.03%, remaining is Fe. This steel alloy contains the Mo than high level, now due to Mo lacks on international market, price comparison is expensive, and this alloy Steel tungsten, content of vanadium are the highest, and the cost therefore producing alloy raises the most significantly.Chinese invention patent (notification number is CN1014081) Disclose low-alloy high performance alloys steel, it is characterised in that the specific chemical composition of this steel grade is (weight %) C0.85%～1.05%, W3.0%～5.0%, Mo2.0%～3.5%, Cr3.5%～5.0%, V1.20%～1.80%, Si0.70%～1.20%, Mn0.20%～0.50%, N0.02%-0.08%, S≤0.03%, P≤0.03%, remaining is Fe.This steel alloy is by reducing Alloying element amount thus reduce production cost, but owing to this high-speed steel is as W6Mo5Cr4V2 steel, all contain than high level Mo, W, V, so production cost the most fundamentally obtains reduction.

Summary of the invention

In order to solve, existing general W6Mo5Cr4V2 steel alloy manufacturing cost is high keeps steel to have enough wearabilities and tough again Property, it is an object of the invention to provide a kind of W6Mo5Cr4V2 that replaces, there is enough toughness and wearability, punch die can be made, cut Cut the novel alloy steel that instrument, cutter, and production cost are low.

A kind of novel alloy steel, it is characterised in that this steel alloy by weight percentage includes: carbon C0.77%～0.92%, silicon Si0.24 %～0.34%, chromium Cr9%～10%, manganese Mn0.20%～0.29%, tungsten W5%～5.3%, molybdenum Mo0.8%～1.2%, Vanadium V0.7%～1.4%, cobalt Co0.9%～1.3%, nickel 0.1%～0.19%, sulfur S≤0.004%, niobium Nb0.8～1.4 %, phosphorus P≤0.004%, its surplus is ferrum Fe.This steel alloy also includes: the titanium of less than 0.35%.Further, this steel alloy Also include: the rare earth element of less than 0.01%.

Detailed description of the invention

A kind of novel alloy steel, it is characterised in that this steel alloy by weight percentage includes: carbon C0.77%～0.92%, silicon Si0.24%～0.34%, chromium Cr9%～10%, manganese Mn0.20%～0.29%, tungsten W5%～5.3%, molybdenum Mo0.8%～ 1.2%, vanadium V0.7%～1.4%, cobalt Co0.9%～1.3%, nickel 0.1%～0.19%, sulfur S≤0.004%, niobium Nb0.8～ 1.4%, phosphorus P≤0.004%, its surplus is ferrum Fe.This steel alloy also includes: the titanium of less than 0.35%.Further, this alloy Steel also includes: the rare earth element of less than 0.01%.Preheating for the first time, temperature is 650 DEG C, and preheating time is 60 minutes； Second time preheats, and temperature is 950 DEG C, and preheating time is 50 minutes；Quench heating, quenching temperature be 1300 DEG C～ 1340 DEG C, the cool time is: (25+ material thickness/2) minute, then oil is cooled to 240 DEG C～260 DEG C；Tempering for the first time, tempering Temperature is 550 DEG C～600 DEG C, and tempering time is 120 minutes, and then air cooling is to room temperature.Second time tempering, temperature is 520 DEG C～54 DEG C, tempering time is 120 minutes, and then air cooling is to room temperature.Third time tempering, temperature is 550 DEG C～560 DEG C, Tempering time is 120 minutes, and then air cooling is to room temperature.

Claims

1. a novel alloy steel, it is characterised in that this steel alloy by weight percentage includes: carbon C0.77%～0.92%, silicon Si0.24%～0.34%, chromium Cr9%～10%, manganese Mn0.20%～0.29%, tungsten W5%～5.3%, molybdenum Mo0.8%～ 1.2%, vanadium V0.7%～1.4%, cobalt Co0.9%～1.3%, nickel 0.1%～0.19%, sulfur S≤0.004%, niobium Nb0.8～ 1.4%, phosphorus P≤0.004%, its surplus is ferrum Fe.

2. a kind of novel alloy steel as claimed in claim 1, it is characterised in that this steel alloy also includes: the titanium of less than 0.35%.

3. a kind of novel alloy steel as claimed in claim 1 or 2, it is characterised in that this steel alloy also includes: less than 0.01% Rare earth element.