CN1085261A - A kind of wear-resistant low-alloy steel - Google Patents
A kind of wear-resistant low-alloy steel Download PDFInfo
- Publication number
- CN1085261A CN1085261A CN 93109961 CN93109961A CN1085261A CN 1085261 A CN1085261 A CN 1085261A CN 93109961 CN93109961 CN 93109961 CN 93109961 A CN93109961 A CN 93109961A CN 1085261 A CN1085261 A CN 1085261A
- Authority
- CN
- China
- Prior art keywords
- steel
- wear
- alloy steel
- resistant low
- hardness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention belongs to field of alloy steel.Mainly be applicable to the knitting machine wear-resisting spare part.Its principal character is that its chemical ingredients (wt%) is: C1.25～1.55%, and Mn0.35～0.85%, Cr1.40～1.90%, V0.1～0.6%, Re0.1～0.3%, Si＜0.35%, surplus is Fe.Final metallographic structure is: latent acicular tempered martensite matrix+carbide+residual austenite.This steel not only has higher hardness, and has toughness preferably, simultaneously, and good casting property, casting yield height.
Description
The invention belongs to field of alloy steel.Main as the knitting machine high-abrasive material.
Wear resistance and comprehensive economy that knitting machine is walked needle cam are one of item keys of evaluation knitting machine quality.Both at home and abroad, life-time service W18Cr4V steel, GCr15 steel, Cr12Mo steel etc. are walked the material of needle cam as knitting machine.Wherein, W18Cr4V and Cr12Mo steel contain valuable W, the Cr element reaches 12～22%, and need heat to quench, and energy consumption is big, and thermal treatment process is complicated; And the GCr15 steel is used as when taking the needle cam material, and wear resistance is relatively poor, lack work-ing life (" second, the 3rd of steel alloy steel grade handbook, metallurgical industry press, nineteen eighty-three).
Swiss Patent CH660884 provides a kind of wear-resistant low-alloy steel, is used to make the accessory on the weaving teaser.Because the carbon chromium content of this steel is on the low side, and hardness is relatively poor, will cause relatively poor wear resistance, so should not be used as the knitting machine cam material that takes the needle.
The object of the present invention is to provide a kind of wear-resistant low-alloy steel of wear resisting property excellence.
Resemble knitting machine and walk the component of needle cam and so on, the gouging abrasion and the adhesive wear that continue of its wear form little energy that to be another rigidity component (as draw point) cause it.Has good abrasion resistance in order to ensure this class cam, cam itself should have sufficiently high hardness and toughness, both must take into account, facts have proved that simple high rigidity can not reach the purpose that improves the cam wear resisting property, what need is hardness and flexible good combination, and material itself has suitable metallographic microstructure.Simultaneously, the requirement for material-saving, economic rationality such as energy-conservation should reduce the content of alloying element as far as possible, and avoid adopting high-temperature heat treatment, to cut down the consumption of energy.
For the foregoing reasons, the chemical ingredients of wear-resistant low-alloy steel of the present invention (Wt%) is: C 1.25～1.55%, and Mn 0.35～0.85%, and Cr 1.40～1.90%, and V 0.1～0.6%, and RE 0.1～0.3%, Si＜0.35%, and surplus is Fe.
In above-mentioned chemical ingredients, carbon is the most cheap strengthening element that is adopted in the common steel.Carbon mainly exists with the form of solid solution or generation carbide in steel.The solid solution capacity of carbon in α iron is limited, and too high carbon amount can not improve the hardness of steel effectively, can increase the fragility of steel on the contrary, and therefore, in the present invention, carbon is advisable with 1.25～1.55%.
Chromium and iron can form continuous solid solution, and can form multiple carbide with carbon (iron).Add a certain amount of chromium in the steel, can improve hardness and intensity, along with the increase of chromium content, the tensile strength of steel and hardness also significantly rise, and therefore, chromium is the normal chemical element that adopts in the wear resisting steel.But adding too much chromium, is irrational economically.So chromium content of the present invention is controlled at 1.40～1.90%.
Vanadium and carbon have extremely strong avidity, and it mainly exists with carbide morphology in steel.The main effect of vanadium in steel is thinning microstructure and crystal grain, improves the intensity and the toughness of steel; The carbide of vanadium has high hardness and wear resistance.In the present invention, its content is 0.1～0.6%.
The purpose that adds rare earth among the present invention: the one, improve the castability of steel, increase the flowability of molten steel, and improve the surface quality of steel ingot or foundry goods, improve casting yield; The 2nd, the plasticity and the toughness of raising steel, because rare earth has deoxidation, desulfurization, the degassing, reduce the effect of inclusion, therefore, can improve the plasticity and the toughness of steel, on the other hand, the sulfide of rare earth element, oxide compound and other compound are in the solidification of molten steel process, all be crystallization nuclei, thus effectively refinement the tissue of crystal grain and steel, this also helps improving the plasticity and the toughness of steel.Because except sufficiently high hardness, have good toughness, also be the essential condition that improves knitting machine cam wear resisting property, this just the present invention add one of main purpose of rare earth.
The present invention is after the smelting furnace melting, and molten steel can be cast into steel ingot, forges or rolling becoming a useful person again; But molten steel also direct pouring becomes foundry goods, and use is provided.Final heat treating regime: 820～880 ℃ of quenching temperatures, oil cooling, hardness reaches HRC 63～66; 140～200 ℃ of tempering temperatures, air cooling, hardness HRC are 62～65.Final metallographic structure is: latent acicular tempered martensite matrix+carbide+residual austenite.
Compared with prior art, the present invention has following advantage:
(1) not only has higher hardness, but also have toughness preferably, so wear resisting property is good.
(2) final thermal treatment temp is low, can save energy.
(3) good casting property, the casting yield height.
Embodiment
According to chemical ingredients scope of the present invention, on common induction furnace, smelted 4 stoves steel of the present invention.In order to contrast, same equipment of while has also been smelted a stove and has not been contained Comparative Examples grade of steel rare earth, that other composition is consistent with the present invention; In addition, a stove W18Cr4V steel and a stove GCr15 steel have also been smelted respectively.Its concrete chemical ingredients is as shown in table 1.Behind the 7 stove smelting steels, a part of molten steel casting becomes ingot casting, and a part of molten steel direct pouring becomes strand, and steel ingot forges into base subsequently.Strand and forging stock are annealed, be reprocessed into sample, quench then and tempering heat treatment, its heat treating regime is if any shown in 2.To through thermal treatment and the casting that grinds, forge sample and carry out test of polishing scratch width and hardness test, test-results is as shown in table 3.In addition, also tested casting yield and casting crystalline grain degree, its result is as shown in table 4.
The polishing scratch width is experimental test on ring-plate wear testing machine.
The chemical ingredients of table 1 embodiment and Comparative Examples (Wt%)
Table 2 embodiment and Comparative Examples heat treating regime
Table 4 embodiment and Comparative Examples castability and grain fineness number
Claims (2)
1, a kind of wear-resistant low-alloy steel is characterized in that chemical ingredients (Wt%) is: C1.25～1.55%, and Mn0.35～0.85%, Cr1.40～1.90%, V0.1～0.6%, RE0.1～0.3%, surplus is Fe.
2,, it is characterized in that in the chemical ingredients (Wt%) Si＜0.35% according to the described low alloy steel of claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93109961 CN1028656C (en) | 1993-08-21 | 1993-08-21 | Wear-resistant low-alloy steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93109961 CN1028656C (en) | 1993-08-21 | 1993-08-21 | Wear-resistant low-alloy steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1085261A true CN1085261A (en) | 1994-04-13 |
| CN1028656C CN1028656C (en) | 1995-05-31 |
Family
ID=4987876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93109961 Expired - Fee Related CN1028656C (en) | 1993-08-21 | 1993-08-21 | Wear-resistant low-alloy steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1028656C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725691A (en) * | 2009-12-23 | 2010-06-09 | 奇瑞汽车股份有限公司 | Method for processing cam |
| CN101851731A (en) * | 2010-04-15 | 2010-10-06 | 安徽省宁国诚信耐磨材料有限公司 | High anti-stress corrosion low-carbon alloyed martensite wear-resistant lining plate |
| CN102758276A (en) * | 2012-08-09 | 2012-10-31 | 马驰 | Double-crank mechanism applied to combing machine cylinder separation roller transmission component |
| CN105483567A (en) * | 2014-07-31 | 2016-04-13 | 李新阳 | High carbon high hardness bainite steel |
| CN109023096A (en) * | 2018-09-17 | 2018-12-18 | 四川易亨机械制造有限公司 | A kind of high performance low-alloy steel and preparation method thereof for pitching the heart for manufacturing railway |
-
1993
- 1993-08-21 CN CN 93109961 patent/CN1028656C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725691A (en) * | 2009-12-23 | 2010-06-09 | 奇瑞汽车股份有限公司 | Method for processing cam |
| CN101851731A (en) * | 2010-04-15 | 2010-10-06 | 安徽省宁国诚信耐磨材料有限公司 | High anti-stress corrosion low-carbon alloyed martensite wear-resistant lining plate |
| CN102758276A (en) * | 2012-08-09 | 2012-10-31 | 马驰 | Double-crank mechanism applied to combing machine cylinder separation roller transmission component |
| CN105483567A (en) * | 2014-07-31 | 2016-04-13 | 李新阳 | High carbon high hardness bainite steel |
| CN109023096A (en) * | 2018-09-17 | 2018-12-18 | 四川易亨机械制造有限公司 | A kind of high performance low-alloy steel and preparation method thereof for pitching the heart for manufacturing railway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1028656C (en) | 1995-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103122433B (en) | Ultrahigh-carbon type bearing steel | |
| CN100434558C (en) | High-boron cast steel containing granular boride and preparing method thereof | |
| CN102363859B (en) | Method for producing wear-resisting steel plate | |
| CN101240402B (en) | Cast high-boron high-speed steel for composite ring roller and heat treatment method thereof | |
| CN103834854B (en) | A kind of austempering ductile iron running roller for heat-treatment production line push-and-pull vehicle and production method thereof | |
| CN102383066B (en) | Abrasion resistant cast steel and preparation method thereof | |
| CN107587079B (en) | Nitrogenous microalloying spring steel and preparation method thereof | |
| CN109023119A (en) | A kind of abrasion-resistant stee and its manufacturing method with excellent plasticity and toughness | |
| CN103320720A (en) | Vanadium-containing high-boron high-chromium wear-resistant alloy and preparation method thereof | |
| CN106939391A (en) | A kind of Ca microalloyings easy-cutting high strength fractured connecting rod steel and manufacture method | |
| CN101348878A (en) | Isothermal quench bainitic ductile cast iron and use thereof | |
| CN108998725A (en) | Track link rail 35MnBM steel and preparation method thereof | |
| CN106591689A (en) | Hypereutectic high-chromium alloy white cast iron chute lining plate and preparation method thereof | |
| CN107675090B (en) | A kind of Brinell hardness 650HBW rank high-wearing feature steel plate and preparation method thereof | |
| CN109735770A (en) | Graphitiferous high-strength tenacity Bainite wear-resisting steel and preparation method thereof | |
| CN106893941B (en) | A kind of low-alloy wear-resistant steel and its heat treatment method | |
| CN113832396A (en) | Long-life steel suitable for unconventional oil-gas operation fracturing pump valve body and forging method thereof | |
| CN108193134A (en) | A kind of coal breaker tup novel low-alloy steel and its heat treatment method | |
| CN1034230C (en) | Low-alloy spheroidal graphite cast-iron and process for heat-treatment of casting thereof | |
| CN108118245A (en) | A kind of wear resistant toothed plate new low-alloy wear-resistant steel and its heat treatment method | |
| CN1085261A (en) | A kind of wear-resistant low-alloy steel | |
| EP0272788B1 (en) | A method of making wear resistant gray cast iron | |
| CN1039267A (en) | Antiwear high-chromium cast iron | |
| CN108546883A (en) | Low-cost high-toughness heterogeneous alloy wear-resistant hammer head and its manufacturing method | |
| CN114196892A (en) | Nb-V alloyed high manganese steel and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |