CN101775534A - High-alloy wear-resisting casting iron and thermal treatment process thereof - Google Patents
High-alloy wear-resisting casting iron and thermal treatment process thereof Download PDFInfo
- Publication number
- CN101775534A CN101775534A CN 201010118787 CN201010118787A CN101775534A CN 101775534 A CN101775534 A CN 101775534A CN 201010118787 CN201010118787 CN 201010118787 CN 201010118787 A CN201010118787 A CN 201010118787A CN 101775534 A CN101775534 A CN 101775534A
- Authority
- CN
- China
- Prior art keywords
- percent
- thermal treatment
- resisting
- wear
- casting iron
- 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.)
- Pending
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
The invention discloses high-alloy wear-resisting casting iron containing the following chemical compositions by weight percent: 2.4-2.8 percent of C, 10-18 percent of Cr, 3.0-4.0 percent of Mn, 0.3-0.4 percent of Al, 0.5-1.0 percent of Si, not more than 0.05 percent of P, not more than 0.03 percent of S and the balance of Fe. A thermal treatment process provided by the invention comprises the following steps of: filling workpieces required to be processed in a thermal treatment furnace at the room temperature and slowly heating; respectively preserving heat for 2h at the temperatures of 200 DEG C, 360 DEG C, 520 DEG C, 640 DEG C and 900 DEG; preserving the heat for 5-15 min until the quenching temperature is 1040-1060 DEG C when heating; and air cooling to the room temperature. The high-alloy wear-resisting casting iron greatly saves the production cost while ensuring the product performance and can be widely applied to manufacturing various wear-resisting products in mining industry, steel mill industry, power plant industry, steel tubing plant industry, ship building industry and the like.
Description
Technical field
The invention belongs to the cast iron alloy technical field, be specifically related to a kind of high-alloy wear-resisting casting iron and thermal treatment process thereof.
Background technology
Metal wear resistant material commonly used at present mainly contains high mangaenese steel, low alloy steel and high Cr antifriction cast iron, and wherein high mangaenese steel has good impelling strength, but wear resistance is relatively poor relatively; Over-all propertieies such as low alloy steel such as Cr-Mo steel, Cr-Mn-Si-Mo steel are better, but are not suitable for strong abrasive wear occasion; High Cr antifriction cast iron is used extensive relatively, and its back hardness of quenching is very high, can be used for strong wear resistant applications, but impelling strength relatively a little less than.
Application number is that 98112329.5 patent documentation discloses a kind of chrome-silicon tungsten wear resisting cast iron, and its chemical ingredients (quality percentage composition) is: C2.4～3.6%; Cr18～28%; Mn1.5～3.5%; W0.8～2.8%; Si≤1.0%; P≤0.10%; S≤0.10%, all the other are Fe.This material Cr content is higher, possesses wear resistance preferably, has improved material wear resistance and hardening capacity by adding the W element.But its toughness is general, often bursts phenomenon and take place in the unit use, and because the through hardening layer is more shallow, cause the workpiece reparation after abrasion resistance obviously descend.In addition, cause cost high because the W element is a precious metal, this series products is difficult at the market large-scale promotion application.
Summary of the invention
The objective of the invention is to high at existing antifriction cast iron cost, toughness general, repair degradation deficiency under the abrasion resistance of back, provide that a kind of abrasive wear resistance is good, toughness better, repeatedly repairs the high-alloy wear-resisting casting iron that the back wear resistance does not have considerable change, this antifriction cast iron cost is relatively low.
In order to achieve the above object, technical scheme of the present invention is as follows:
High-alloy wear-resisting casting iron of the present invention is a principal element with Fe, C, Cr, Mn, and the mass percentage content of each chemical ingredients is respectively: C2.4～2.8%; Cr10～18%; Mn3.0～4.0%; Al 0.3～0.4%; Si 0.5～1.0%; P≤0.05%; S≤0.03%, all the other are Fe.
The mass percentage content of described each chemical ingredients of high-alloy wear-resisting casting iron is preferably: C2.4～2.8%; Cr13～16%; Mn3.4～3.6%; Al 0.33%; Si 0.5～1.0%; P≤0.05%; S≤0.03%, all the other are iron.
Wherein the main effect of C is the carbide that forms high rigidity, makes cast alloy iron have good wear resistance, and through a large number of experiments show that: C content is lower than at 2.4% o'clock and is difficult to guarantee wear resistance; The carbide that increases when the C too high levels is distributed on the crystal boundary mostly, and the cast iron impact toughness is descended, and therefore C content is defined in 2.4～2.8%.
The main effect of Cr is: improve alloy wear-resisting thereby a part of Cr and C form carbide, another part enters matrix, and surface energy generates the very thin and close attachment Cr at alloy surface in oxidizing medium
2O
3Oxide film has significantly improved its antioxidant property.Compare with existing CrMnW family wear-resisting cast iron, Cr content reduces in the high-alloy wear-resisting casting iron of the present invention, has saved production cost when guaranteeing product performance.
The adding of Mn can obviously strengthen the hardening capacity of alloy, when content is low effect not obvious, content is higher than 4.0% o'clock hardening capacity and changes not obvious and cost increases.
Compare with existing CrMnW family wear-resisting cast iron, high-alloy wear-resisting casting iron of the present invention has been removed precious metal W element, antifriction cast iron cost therefore per ton reduces more than 3000 yuan, and the effect of W is to form the high rigidity carbide to improve wear resistance and increase hardening capacity, and the addition of C element and Mn element controlled well can reach same purpose.
High-alloy wear-resisting casting iron has added the Al element, its effect is: it is oxidized to take the lead in when Al runs into high temperature oxidation stability atmosphere, form fine and close protective oxide layer at alloy surface on the one hand, the antioxidant property of material is significantly improved, impact toughness also has raising in various degree; The formation of oxide compound can prevent that workpiece from producing pore in casting process on the other hand, makes the workpiece internal structure tightr.
Si helps the molten steel deoxidization degasification, and can make the carbide agglomerateization, but too high levels can increase material fragility, so it is controlled in the 0.5-1.0%; P, S are the detrimental impurity of sneaking into in furnace charge or the alloying process, and its content is low more good more.
Another object of the present invention is to provide a kind of thermal treatment process of high-alloy wear-resisting casting iron, technical scheme is as follows: need handle the workpiece heat treatment furnace of at room temperature packing into and slowly heat up, all be incubated 2h to 200 ℃, 360 ℃, 520 ℃, 640 ℃, 900 ℃, insulation 5～15min when being heated to 1040～1060 ℃ of quenching temperatures, air cooling is to room temperature.
The invention has the advantages that:
1, compare with the CrMnW family wear-resisting cast iron of widespread use in the market, owing to removed precious metal W element and Cr content reduces greatly, antifriction cast iron cost per ton reduces more than 3000 yuan, has saved production cost greatly when guaranteeing product performance.
2, because the adding of Al element, can form fine and close protective oxide layer on the antiwear cast iron alloy surface, make material structure tightr, antioxidant property significantly improves, impact toughness also has raising in various degree, can prevent effectively that product from bursting the generation of phenomenon in the unit use; The formation of oxide compound can prevent that workpiece from producing pore in casting process, make Workpiece structure tightr on the other hand.
3, because all significantly enhancings of antifriction cast iron hardness of the present invention and toughness, repair back wear resistance and hardness and do not have considerable change, significantly reduced user's use cost on the one hand, also having solved in the past on the other hand, product meets the environmental protection and energy saving policy that China advocates at present owing to be difficult to recycle the environmental issue that causes.
4, currently available products only limits to the coarse undressed accessory of enterprises such as mine, product of the present invention is by the adjustment of alloying element, its use range is also extended greatly, can generally be applicable to industry-by-industries such as mine, steel mill, power station, steel mill, pipe mill, shipbuilding, powder metallurgy.
Embodiment
Following examples are intended to illustrate the present invention rather than limitation of the invention further, and the present invention can implement by the described arbitrary mode of summary of the invention.
Embodiment 1:
According to existing smelting technology, the mass percentage content of each chemical ingredients of high-alloy wear-resisting casting iron adopts: C2.6%; Cr14.5%; Mn 3.57%; Al 0.33%; Si 0.8%; P≤0.05%; S≤0.03%, all the other are iron.
The high-alloy wear-resisting casting iron technological process of production is:---melting---is adjusted composition---------cast---thermal treatment of coming out of the stove with alterant to batching.Thermal treatment process of the present invention is: need handle the workpiece heat treatment furnace of at room temperature packing into and slowly heat up, all be incubated 2h to 200 ℃, 360 ℃, 520 ℃, 640 ℃, 900 ℃, and insulation 12min when being heated to 1040～1060 ℃ of quenching temperatures, air cooling is to room temperature.The equal technology routinely of other steps except that thermal treatment process.Mechanical property is after the thermal treatment: hardness is HRC64, and impelling strength is 13.2J/cm
2Use shows through the rich woods steel pipe Manufacturing Co., Ltd of user Guizhou Hua Xi, strong, the inside and outside material of extrusion roll hardness height, wear resistance that adopts material of the present invention to make is uniform and stable, do not have glutinous steel phenomenon in the production process, be SKD11 (3Cr2W8V), H13 more than 3 times of original material extrusion roll such as (4Cr5MoSiV1) work-ing life.
Embodiment 2:
According to existing smelting technology, the mass percentage content of each chemical ingredients of high-alloy wear-resisting casting iron adopts: C2.5%; Cr 13.5%; Mn3.35%; Al 0.33%; Si 0.6%; P≤0.05%; S≤0.03%, all the other are iron.
Fusion process and thermal treatment process are with embodiment 1, and mechanical property is after the thermal treatment: hardness is HRC63, and impelling strength is 14J/cm
2Use shows through user Xuzhou ring of light steel pipe company limited, extrusion roll hardness height, the wear resistance that adopts material of the present invention to make is strong, back hardness no change is repaired in wearing and tearing, do not have glutinous steel phenomenon in the production process, be more than 2.5 times of SKD11 (3Cr2W8V) extrusion roll work-ing life.
Claims (3)
1. a high-alloy wear-resisting casting iron is a principal element with Fe, C, Cr, Mn, and it is characterized in that: the mass percentage content of each chemical ingredients is respectively: C2.4～2.8%; Cr10～18%; Mn3.0～4.0%; Al 0.3～0.4%; Si 0.5～1.0%; P≤0.05%; S≤0.03%, all the other are Fe.
2. a kind of high-alloy wear-resisting casting iron according to claim 1 is characterized in that: the mass percentage content of each chemical ingredients is respectively: C2.4～2.8%; Cr 13～16%; Mn3.4～3.6%; Al 0.33%; Si0.5～1.0%; P≤0.05%; D≤0.03%, all the other are iron.
3. the thermal treatment process of the described high-alloy wear-resisting casting iron of claim 1, it is characterized in that: need handle the workpiece heat treatment furnace of at room temperature packing into and slowly heat up, all be incubated 2h to 200 ℃, 360 ℃, 520 ℃, 640 ℃, 900 ℃, insulation 5～15min when being heated to 1040～1060 ℃ of quenching temperatures, air cooling is to room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010118787 CN101775534A (en) | 2010-03-08 | 2010-03-08 | High-alloy wear-resisting casting iron and thermal treatment process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010118787 CN101775534A (en) | 2010-03-08 | 2010-03-08 | High-alloy wear-resisting casting iron and thermal treatment process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101775534A true CN101775534A (en) | 2010-07-14 |
Family
ID=42512119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010118787 Pending CN101775534A (en) | 2010-03-08 | 2010-03-08 | High-alloy wear-resisting casting iron and thermal treatment process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101775534A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2533631C1 (en) * | 2013-07-30 | 2014-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Wear proof cast iron |
| CN104328332A (en) * | 2014-10-24 | 2015-02-04 | 驻马店市三山耐磨材料有限公司 | High-chromium iron lining plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044131A (en) * | 1989-01-09 | 1990-07-25 | 山东省冶金设计研究院 | Chrome-molybdenum-vanadium heat-resistant and abrasion-resistant cast iron |
| SU1725757A3 (en) * | 1990-09-27 | 1992-04-07 | Silman Grigorij | Wear-resistant cast iron |
| CN1425791A (en) * | 2003-01-09 | 2003-06-25 | 江苏省机电研究所有限公司 | Wear resistant cast iron containing titanium-chromium and its heat treatment process |
| CN101104196A (en) * | 2006-12-21 | 2008-01-16 | 安徽省安工机械制造有限公司 | Method for manufacturing high chromium white wear-resistant cast iron |
-
2010
- 2010-03-08 CN CN 201010118787 patent/CN101775534A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044131A (en) * | 1989-01-09 | 1990-07-25 | 山东省冶金设计研究院 | Chrome-molybdenum-vanadium heat-resistant and abrasion-resistant cast iron |
| SU1725757A3 (en) * | 1990-09-27 | 1992-04-07 | Silman Grigorij | Wear-resistant cast iron |
| CN1425791A (en) * | 2003-01-09 | 2003-06-25 | 江苏省机电研究所有限公司 | Wear resistant cast iron containing titanium-chromium and its heat treatment process |
| CN101104196A (en) * | 2006-12-21 | 2008-01-16 | 安徽省安工机械制造有限公司 | Method for manufacturing high chromium white wear-resistant cast iron |
Non-Patent Citations (2)
| Title |
|---|
| 《有色设备》 20061231 翟兴昌 高铬锰耐磨铸铁在渣浆泵过流件上的开发应用 22-24 , 第1期 * |
| 《铸造技术》 20080831 王华等 铝对高铬耐磨铸铁组织与性能的影响 1035-1038 1-3 第29卷, 第8期 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2533631C1 (en) * | 2013-07-30 | 2014-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ярославский государственный технический университет" | Wear proof cast iron |
| CN104328332A (en) * | 2014-10-24 | 2015-02-04 | 驻马店市三山耐磨材料有限公司 | High-chromium iron lining plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104099531A (en) | High-hardness and wear-resistant ball and preparation method thereof | |
| CN105586546A (en) | Machining manufacturing process for spline shaft made of high-manganese steel | |
| CN103436769B (en) | The wear-resistant Fe-Cr-B-Al casting alloy of a kind of high temperature | |
| CN105568146A (en) | Production process of tiny chamfering special-shaped line for precise products | |
| CN111321356B (en) | Laser additive manufacturing sink roller composite shaft sleeve and preparation method thereof | |
| CN101775534A (en) | High-alloy wear-resisting casting iron and thermal treatment process thereof | |
| CN103667916A (en) | High-hardness alloy steel material and preparation method thereof | |
| CN103789678B (en) | A kind of Alloy steel material for drill and preparation method thereof | |
| CN110578101B (en) | Marine tempered sorbite high-strength and high-toughness stainless structural steel and preparation method thereof | |
| CN112626410A (en) | High-toughness high-wear-resistance boron-containing white cast iron | |
| CN105624577B (en) | The manufacture method of Fire-resistant Steels Used in Buildings material | |
| CN102477511B (en) | Method for preparing nitrided ferrovanadium | |
| CN104498807A (en) | Method for manufacturing high-wear-resistance cast iron alloy | |
| CN101519755A (en) | High-aluminum stainless steel based on 310S | |
| CN107267778B (en) | A kind of magnesium smelting reduction pot and preparation method thereof | |
| CN109692872B (en) | Composite steel plate for rolling mill sliding plate and production method thereof | |
| JP2005336553A (en) | Hot tool steel | |
| CN104263891A (en) | Processing technology of scoop for mining | |
| CN104084266B (en) | A kind of corrosion-resistant high rigidity mill section | |
| JP2014210941A (en) | Powder high-speed tool steel excellent in high-temperature temper hardness | |
| CN109055869B (en) | Wide-specification heat-resistant steel plate for refining heating furnace tube and production method thereof | |
| CN107891138B (en) | Preparation process of ultrahigh vanadium high-speed steel compression roller for manufacturing metal corrugated board | |
| CN103981454B (en) | A kind of thermostable antiwear oxidation resistant alloyed steel and manufacture method thereof | |
| CN103981433A (en) | Wear-resistant casting ball and manufacturing process thereof | |
| CN104073733A (en) | Air corrosion-resistant alloy steel material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100714 |