CN1311938C - Continuous double-metal cast forming method - Google Patents
Continuous double-metal cast forming method Download PDFInfo
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- CN1311938C CN1311938C CNB2005100048904A CN200510004890A CN1311938C CN 1311938 C CN1311938 C CN 1311938C CN B2005100048904 A CNB2005100048904 A CN B2005100048904A CN 200510004890 A CN200510004890 A CN 200510004890A CN 1311938 C CN1311938 C CN 1311938C
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Abstract
The present invention relates to casting forming method in one step of bimetallic material by continuous pouring. The bimetallic material comprises hard metallic material and ordinary metallic material. The present invention is characterized in that molding: a lower box is a metal mold, and an upper box is sand mold; smelting: the two metallic material is simultaneously smelted to tapping temperature by two furnaces; pouring: the hard metallic material is firstly poured into a flask joint, and then the ordinary metallic material is poured to the top of a riser; after solidification is carried out, molding is started; ageing processing at normal temperature is carried out, and the riser is cut by sand removal. The present invention has the advantages of simple technology, simplified procedure and short periodicity, cost is reduced by 40 to 50%, productive efficiency is increased by more than 2 times, the two material combination of the produced parts is firm, and the service life is improved by more than 2 times.
Description
Technical field
The present invention relates to a kind of continuous double-metal cast forming method.
Background technology
At present, twice moulding generally adopted in the casting of bimetallic material, with the first moulding of hard metal material part, is parallels moulding again with it after unpacking then, carries out common metal material part moulding by casting again, and its complex process, bimetallic junction are poor with joint efforts; And traditional high manganese steel casting then through quench hot, obtains the austenitic matrix tissue by sand casting, and above-mentioned two kinds of method complex process are difficult for often holding, and simultaneously, the cycle is long, the cost height.
Summary of the invention
Its purpose of the present invention is: improve a kind of continuous double-metal cast forming method, its technology is simple, and operation is simplified, and is with short production cycle, and cost reduces, and production efficiency improves, and the part of two kinds of materials of production is in conjunction with firm, and improve service life.
The present invention is achieved in that a kind of continuous double-metal cast forming method, comprising: hard metal material and common metal material is characterized in that: moulding: nowel is a metal mold, and top box is a sand mold; (2) melting: above-mentioned two kinds of metal materials are distinguished melting to tapping temperature by two stoves simultaneously; (3) cast: cast hard metal material is to flask joint earlier, and then, cast common metal material is to the rising head top; (4) post-solidification open type, room temperature ageing is handled; (5) rising head is cut in sand removal.Described hard metal material is the rich chromium cast iron material, and it is matrix with Fe, wherein contains C:2.4-2.6%, Si:0.6-0.8%, Mn:0.6-0.8%, Cr:12%, Mo:0.6-1%, Cu:0.5%, S＜0.1%, P＜01%; Described common metal material is the medium carbon steel material, and it is matrix with Fe, wherein contains C:0.3-0.5%, Si:0.3-0.5%, Mn:0.7-0.9%, Cr:0.4-0.5%, S＜0.05%, P＜0.02%.Described hard metal material and common metal material and common metal material are carried out stokehold chemical examination program before coming out of the stove, modified in stove, come out of the stove when composition reaches mentioned component and tapping temperature.Described rich chromium cast iron material molten iron tapping temperature is 1400-1450 ℃, and pouring temperature is 135-1420 ℃.The tapping temperature of described medium carbon steel material molten steel is 1550-1600 ℃, and pouring temperature is 1450-1520 ℃.Described rich chromium cast iron material molten iron poring rate is faster than the poring rate of medium carbon steel material.800-900 ℃ of described open form temperature.Described metal mold is a mould heat resisting steel, and described sand mold is a greensand mold.In upper and lower type, be coated with the interfacial separation agent of refractory material.
The moulding of two kinds of metal material continuous pourings of the present invention one-step casting forms metallographic structure and intensity, toughness and the hardness that needs, its technology is simple, operation is simplified, with short production cycle, cost has reduced 40-50%, production efficiency has improved more than 2 times, and its two kinds of materials of the part of production are in conjunction with firm, and improved more than the twice service life.
Elaborate with accompanying drawing in conjunction with the embodiments.
Description of drawings
Hammer embodiment schematic diagram is got rid of in Fig. 1 the present invention casting;
Fig. 2 the present invention casts the firm and hard illustration intention of executing in Hubei Province;
Fig. 3 casting liner plate embodiment of the present invention schematic diagram;
Accompanying drawing number
1. part 101, hard metal material 102, common metal material
2. case clamp
3. rising head molten steel 301, cast gate
4. rising head
5. nowel 501, top box
The specific embodiment
Embodiment 1: cast with the present invention and get rid of hammer technology
(1) moulding:
As shown in Figure 1: adopt mould steel, high chromium heat resisting steel to make nowel, top box adopts wet sandbox type combined, and black (in vain) lead powder and or its coating are adopted in the interfacial separation agent of (being general cold type moulding) above-mentioned refractory material.
(2) melting of selecting materials: with the melting respectively of two electric furnaces.Described hard metal material 10 and common metal material 102 are carried out stokehold chemical examination program before coming out of the stove: hard metal village matter is the rich chromium cast iron material, it is matrix with Fe, wherein contain C:2.4-2.6%, Si:0.6-0.8%, Mn:0.6-0.8%, Cr:12%, Mo:0.6-1%, Cu:0.5%, S＜0.1%, P＜01%; Described common metal material is the medium carbon steel material, and it is matrix with Fe, wherein contains C:0.3-0.5%, Si:0.3-0.5%, Mn:0.7-0.9%, Cr:0.4-0.5%, S＜0.05%, P＜0.02%.The tapping temperature of described rich chromium cast iron material molten iron is 1400-1450 ℃, and the tapping temperature of described carbon steel material molten steel is 1550-1600 ℃.
(3) cast: pour into a mould rich chromium cast iron material molten iron earlier, its pouring temperature is 1350-1420 ℃.Then pour into a mould medium carbon steel material molten steel, its pouring temperature is 1450-1520 ℃.
(4) post-solidification open type, the low temperature aging of 800-900 ℃ of open form is handled.
(5) sand removal, cut appetite.
Embodiment 2: cast Hubei Province plate technology with the present invention
As shown in Figure 2, moulding, the melting of selecting materials, cast, post-solidification open type, sand removal, cut appetite, no longer repeat with embodiment 1.
With casting liner plate technology of the present invention: as shown in Figure 3, moulding, select materials and hold refining, cast, post-solidification open type, sand removal, cut appetite, do not repeating with embodiment 1.
Experimental results show that: the product of producing with the present invention as: get rid of hammer, Hubei Province plate, liner plate etc., its technology is simple, with short production cycle, cost has reduced 40-50%, production efficiency improves more than 2 times, the bound fraction of producing two kinds of materials is austenite+cementite, it is the natural transition of two kinds of materials, it is in conjunction with firm, make the working position adopt the rich chromium cast iron material, reach hardness high abrasion damage and have intensity and toughness, but not the working position adopts the medium carbon steel material that required strength and toughness is arranged again, both saved the precious metal material, improved more than 2 times service life and improve.
Claims (9)
1, a kind of continuous double-metal cast forming method comprises: hard metal material and common metal material is characterized in that: (one) moulding: nowel is a metal mold, and top box is a sand mold; (2) melting: above-mentioned two kinds of metal materials are distinguished melting to tapping temperature by two stoves simultaneously; (3) cast: cast hard metal material is to flask joint earlier, and then, cast common metal material is to the rising head top; (4) post-solidification open type, room temperature ageing is handled; (5) rising head is cut in sand removal.
2. the method for claim 1, it is characterized in that: described hard metal material is the rich chromium cast iron material, it is matrix with Fe, wherein contains C:2.4-2.6%, Si:0.6-0.8%, Mn:0.6-0.8%, Cr:12%, Mo:0.6-1%, Cu:0.5%, S＜0.1%, P＜01%; Described common metal material is the medium carbon steel material, and it is matrix with Fe, wherein contains C:0.3-0.5%, Si:0.3-0.5%, Mn:0.7-0.9%, Cr:0.4-0.5%, S＜0.05%, P＜0.02%.
3. method as claimed in claim 2 is characterized in that: described hard metal material and common metal material are carried out stokehold chemical examination program before coming out of the stove, modified in stove, come out of the stove when composition reaches mentioned component and tapping temperature.
4. method as claimed in claim 2 is characterized in that: described rich chromium cast iron material molten iron tapping temperature is 1400-1450 ℃, and pouring temperature is 1350-1420 ℃.
5. method as claimed in claim 2 is characterized in that: the tapping temperature of described medium carbon steel material molten steel is 1550-1600 ℃, and pouring temperature is 1450-1520 ℃.
6. method as claimed in claim 2 is characterized in that: the poring rate of described rich chromium cast iron material molten iron is faster than the poring rate of medium carbon steel material.
7. method as claimed in claim 1 or 2 is characterized in that: described open form temperature is 800-900 ℃.
8. the method for claim 1, it is characterized in that: described metal mold is a mould heat resisting steel, described sand mold is a greensand mold.
9. the method for claim 1 is characterized in that: be coated with the interfacial separation agent of refractory material in upper and lower type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100048904A CN1311938C (en) | 2005-02-03 | 2005-02-03 | Continuous double-metal cast forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100048904A CN1311938C (en) | 2005-02-03 | 2005-02-03 | Continuous double-metal cast forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644274A CN1644274A (en) | 2005-07-27 |
| CN1311938C true CN1311938C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100048904A Expired - Fee Related CN1311938C (en) | 2005-02-03 | 2005-02-03 | Continuous double-metal cast forming method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773464B (en) * | 2012-08-06 | 2015-10-14 | 铜陵铜官府文化创意股份公司 | A kind of different Cu alloy solution is cast simultaneously and is made the method for copper artware |
| US9656321B2 (en) * | 2013-05-15 | 2017-05-23 | General Electric Company | Casting method, cast article and casting system |
| CN114147181B (en) * | 2021-10-21 | 2023-12-29 | 浙江林家昌隆阀门铸造有限公司 | Double-furnace casting method |
| CN116037899A (en) * | 2022-12-30 | 2023-05-02 | 兰州城市学院 | Method for manufacturing coal grinding lining plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106682A (en) * | 1986-10-11 | 1988-04-20 | 机械工业部沈阳铸造研究所 | White cast-iron and cast steel bimetal composite casting |
| CN1039985A (en) * | 1988-07-31 | 1990-02-28 | 华北电力学院 | Process for casting double metals compound ball mill lining palte |
| CN1064633A (en) * | 1991-03-07 | 1992-09-23 | 余杭县南山不锈钢铸造厂 | Method for double liquid double metal compound casting of jaw plates |
-
2005
- 2005-02-03 CN CNB2005100048904A patent/CN1311938C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106682A (en) * | 1986-10-11 | 1988-04-20 | 机械工业部沈阳铸造研究所 | White cast-iron and cast steel bimetal composite casting |
| CN1039985A (en) * | 1988-07-31 | 1990-02-28 | 华北电力学院 | Process for casting double metals compound ball mill lining palte |
| CN1064633A (en) * | 1991-03-07 | 1992-09-23 | 余杭县南山不锈钢铸造厂 | Method for double liquid double metal compound casting of jaw plates |
Non-Patent Citations (1)
| Title |
|---|
| 双金属复合锤头界面结合性能的研究 刘清梅等，热加工工艺，第02期 2003 * |
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| CN1644274A (en) | 2005-07-27 |
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