CN103614641A - Special high-chromium forged steel - Google Patents
Special high-chromium forged steel Download PDFInfo
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- CN103614641A CN103614641A CN201310552909.3A CN201310552909A CN103614641A CN 103614641 A CN103614641 A CN 103614641A CN 201310552909 A CN201310552909 A CN 201310552909A CN 103614641 A CN103614641 A CN 103614641A
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Abstract
The invention relates to special high-chromium forged steel comprising the following chemical components in percentage by mass: 2.6-3.0% of C, 0.4-0.7% of Si, 0.3-0.6% of Mn, 10.0-11% of Cr, less than or equal to 0.008% of S, less than or equal to 0.006% of P and the balance of Fe. The special high-chromium forged steel disclosed by the invention has the advantages and positive effects that the wear resistance of the product disclosed by the invention is improved, so that the consumption is reduced, the used amount is reduced and the procurement cost is saved; compared with steel balls with equivalent quality on the market, the special high-chromium forged steel is better in performance and less in use wearing capacity.
Description
Technical field:
The invention belongs to cast steel field, relate to wear resistance castings, especially a kind of special high chromium steel is forged and manufacture method.
Background technology:
The wear resistance of existing mine Special wear-resistant steel ball, steel section is lower, if increase wear resistance, need to improve the especially content of ferrochrome of iron alloy; And ferrochrome is expensive, thereby make its manufacturing cost higher.Existing patented technology " mine Special wear-resistant steel ball, steel section " (Granted publication number is CN 102296236 B), it adopts chromium, violent, rare earth alloy to become low network abrasion-proof steel ball with iron production, production cost is 5200 yuan/t only, but its use properties is poor, ore consumption per ton is 40g, be 1.6 times of high-chromium wear-resistant steel ball consumption, economic benefit is undesirable.
Summary of the invention:
The object of the invention is to overcome prior art weak point, provide a kind of special high chromium steel to forge and manufacture method.
The technical scheme that the present invention realizes object is as follows:
Special high chromium steel is forged, and according to chemical composition mass percent is: C 2.6～3.0%, Si 0.4～0.7%, Mn 0.3～0.6%, Cr 10.0～11%, S≤0.008%, P≤0.006%, all the other are Fe.
Manufacture the method that described special high chromium steel is forged, comprise melting technology and thermal treatment process, it is characterized in that: the steps include:
Its manufacture method comprises melting technology and thermal treatment process:
(1) melting technology:
The first step melting: adopt medium-frequency induction furnace melting;
(2) thermal treatment process:
Quench: process furnace is warming up to 960 ℃, is incubated after 2～3 hours, in oil quenching bath, quench, after 2 hours, drop into tempering stove;
Tempering: furnace temperature is controlled at 170～200 ℃, tempering 5～8 hours, obtains special high chromium steel after cooling and forges.
Advantage of the present invention and positively effect are:
1, product of the present invention has improved wear resistance, thereby has reduced consumption, has saved consumption, saved purchase cost.
2, the present invention compares with the steel ball of equal quality on market, and performance is better, uses abrasion loss to reduce.
Following table 1 is performance and the price contrast table of high chromium steel ball, low-chrome steel ball on Special wear-resistant steel ball of the present invention and existing market:
Table 1
| Kind | Hardness (HRC) | Abrasion (g/t) | Wear resistance (g) | Average price (unit/t) |
| Extra-high-speed is forged ball | 63-65 | 18 | 11.1 | 9600 |
| High chromium ball | 55-60 | 25 | 8 | 9000 |
| Low chromium ball | 45-50 | 200 | 1 | 3100 |
As can be seen from the above table, abrasion-proof steel ball price of the present invention is relatively low, has so greatly reduced cost.
Preparation method of the present invention is simple to operate, solves the high problem of manufacturing cost of existing mine Special wear-resistant steel ball, steel section, can be widely used in mine industry.
Embodiment:
Embodiment 1:
Special high chromium steel is forged, and according to chemical composition mass percent is: C2.6%, Si0.4%, Mn0.3%, Cr10.0%, S≤0.008%, P≤0.006%, all the other are Fe.
Embodiment 2:
Special high chromium steel is forged, and according to chemical composition mass percent is: C3.0%, Si0.7%, Mn0.6%, Cr11%, S≤0.008%, P≤0.006%, all the other are Fe.
Embodiment 3:
Special high chromium steel is forged, and according to chemical composition mass percent is: C2.8%, Si0.5%, Mn0.5%, Cr10.5%, S≤0.008%, P≤0.006%, all the other are Fe.
The manufacture method that special high chromium steel described in embodiment 1-3 is forged, comprises melting technology and thermal treatment process, it is characterized in that: the steps include:
Its manufacture method comprises melting technology and thermal treatment process:
(1) melting technology:
The first step melting: adopt medium-frequency induction furnace melting;
Second step cast: pour into a mould in metal die, during cast, temperature is 1600 ℃, then the cooling rough casting that makes; Rough casting is dropped into process furnace after devaning, polishing;
(2) thermal treatment process:
Quench: process furnace is warming up to 650 ℃, is incubated after 2～4 hours, in 1000～1050 ℃ of ponds, quench, after 2 hours, drop into tempering stove;
Tempering: furnace temperature is controlled at 250～280 ℃, tempering 8～9 hours, obtains special high chromium steel after cooling and forges.
Claims (2)
1. special high chromium steel is forged, and it is characterized in that: according to chemical composition mass percent is: C 2.6～3.0%, Si 0.4～0.7%, Mn 0.3～0.6%, Cr 10.0～11%, S≤0.008%, P≤0.006%, all the other are Fe.
2. manufacture the method that special high chromium steel as claimed in claim 1 is forged, comprise melting technology and thermal treatment process, it is characterized in that: the steps include:
Its manufacture method comprises melting technology and thermal treatment process:
(1) melting technology:
The first step melting: adopt medium-frequency induction furnace melting;
(2) thermal treatment process:
Quench: process furnace is warming up to 960 ℃, is incubated after 2～3 hours, in oil quenching bath, quench, after 2 hours, drop into tempering stove;
Tempering: furnace temperature is controlled at 170～200 ℃, tempering 5～8 hours, obtains special high chromium steel after cooling and forges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310552909.3A CN103614641A (en) | 2013-11-08 | 2013-11-08 | Special high-chromium forged steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310552909.3A CN103614641A (en) | 2013-11-08 | 2013-11-08 | Special high-chromium forged steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103614641A true CN103614641A (en) | 2014-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310552909.3A Pending CN103614641A (en) | 2013-11-08 | 2013-11-08 | Special high-chromium forged steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN103614641A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911462A (en) * | 2015-06-04 | 2015-09-16 | 东台市宁洋钢球有限公司 | Steel ball made of stainless steel scraps |
| CN109706294A (en) * | 2019-01-25 | 2019-05-03 | 王晓喜 | A kind of heat-treatment quenching method of high-chromium alloy wear-resistant steel forging |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445889A (en) * | 2008-12-26 | 2009-06-03 | 马鞍山市益丰实业集团有限公司 | High abrasion proof re-synthesizing cast iron grinding ball and production method thereof |
| CN102296236A (en) * | 2011-08-12 | 2011-12-28 | 河曲县万联节能材料有限公司 | Wear resistant steel ball and segment specially used in mines |
-
2013
- 2013-11-08 CN CN201310552909.3A patent/CN103614641A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101445889A (en) * | 2008-12-26 | 2009-06-03 | 马鞍山市益丰实业集团有限公司 | High abrasion proof re-synthesizing cast iron grinding ball and production method thereof |
| CN102296236A (en) * | 2011-08-12 | 2011-12-28 | 河曲县万联节能材料有限公司 | Wear resistant steel ball and segment specially used in mines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104911462A (en) * | 2015-06-04 | 2015-09-16 | 东台市宁洋钢球有限公司 | Steel ball made of stainless steel scraps |
| CN109706294A (en) * | 2019-01-25 | 2019-05-03 | 王晓喜 | A kind of heat-treatment quenching method of high-chromium alloy wear-resistant steel forging |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140305 |