CN105689646A - Integral casting production technology for middle trough - Google Patents
Integral casting production technology for middle trough Download PDFInfo
- Publication number
- CN105689646A CN105689646A CN201610257957.3A CN201610257957A CN105689646A CN 105689646 A CN105689646 A CN 105689646A CN 201610257957 A CN201610257957 A CN 201610257957A CN 105689646 A CN105689646 A CN 105689646A
- Authority
- CN
- China
- Prior art keywords
- evaporative pattern
- piece casting
- intermediate channel
- production technology
- sand
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
Abstract
The invention relates to an integral casting production technology for a middle trough. The technology is characterized by comprising the steps that an evaporative mold is put into a box, sand is loaded into the box to bury the evaporative pattern, jolt ramming is performed, the box is sealed, and a negative pressure environment is kept; molten steel is guided into the box to form an integral casting part; the integral casting part is put on a vibration platform through a lifting frame at the temperature of 650 DEG C-900 DEG C to be vibrated to eliminate stress. The integral casting production technology has the advantages that the defects that an original middle trough integral casting product is large in size difference, difficult to demold, prone to sand conglutination, concentrated in stress and the like are overcome, an effective technical scheme is creatively researched and developed, the prepared product can be directly used, the welding and surface processing processes in the subsequent links are avoided, and the cost is greatly lowered; in addition, the prepared middle trough is good in overall performance, high in strength and capable of effectively prolonging the service life.
Description
Technical field
The present invention relates to a kind of intermediate channel one piece casting production technology, be particularly suited for scratch board conveyor。
Background technology
Scratch board conveyor is common mine equipment equipment, and intermediate channel is the parts that scratch board conveyor is important, and several intermediate channel axially combine fixing, become transport channel, carries the Ore fallen, and Ore is scraped by chain, scraper plate, it is achieved transport task。Meanwhile, intermediate channel also carry coal-winning machine, plays the effect of coal-winning machine base, and its coupling part is rail chair (unit's throne)。
Structure relative complex due to intermediate channel, the mode of production for a long time is all that the parts adopted individually produce, again with welding assembly, the production and processing so making intermediate channel is relatively costly, and the intermediate channel bulk strength that is welded is relatively low, intermediate channel work under bad environment in addition, bearing pressure is big, especially baffle, rail chair directly contact with Ore, chain, coal-winning machine (by left and right rail chair) and rub for a long time, therefore intermediate channel becomes the parts being easiest to damage。In general, the time of a work surface, intermediate channel will be damaged complete substantially, and this just makes the production cost high (the intermediate channel assembly cost of 100 meters reaches 2,200,000 yuan) that coal is looked forward to。
In order to solve intermediate channel each parts, weld cracking, welding deformation and service life low problem occurs, reduce the working service cost of drag conveyor simultaneously, the manufacturing technology of intermediate channel starting to explore and be transitioned into one piece casting by part assembly welding gradually。
Up to now, intermediate channel technique for integral casting is necessarily developed。But due to intermediate channel complicated integral structure, build position huge, each material requires to be not quite similar, casting section thickness is uneven, axis direction has the required precision that varies in size high hole and the reason such as rail chair, plug-in unit, effect after intermediate channel one piece casting is unsatisfactory, can assemble after also needing to carry out roughing。Particularly rail chair and middle plate, it is often necessary to repair welding or reweld。So, cast-in-block intermediate channel fails to obtain good application effect。
Summary of the invention
It is an object of the invention to provide a kind of intermediate channel one piece casting production technology to make up the deficiencies in the prior art, namely the intermediate channel that this method produces can be used for without roughing assembling。After compensate for prior art intermediate channel one piece casting, yielding, stress is concentrated, is needed repair welding, the deficiency that need to process。
The present invention the technical scheme is that intermediate channel one piece casting production technology for achieving the goal, and it is characterized in that:
A. evaporative pattern is manufactured according to the shape of intermediate channel；
B. outside evaporative pattern, smear high temperature finishes；
C. putting in casing by evaporative pattern, dress sand landfill, by sand body jolt ramming, evaporative pattern intracavity reserves sprue gate；Closed box；
D. bleed outward from casing, make casing be in subnormal ambient；
E. being imported from sprue gate by molten steel, evaporative pattern is melted evaporation, and steam is extracted out by negative pressure, and molten steel is full of evaporative pattern and is taken up space, and forms one-piece casting；
F. again one-piece casting is put into vibration platen so that it is vibration, to eliminate stress；
E. remove the one-piece casting surface grains of sand, carry out heat treatment, get product。
Optimize: the position, corner of described evaporative pattern, be preset with occupy-place block。
Optimize: presetting hoisting frame in casing, evaporative pattern is positioned at hoisting frame。
Optimize: when extracting one-piece casting, its temperature is 650 DEG C-900 DEG C。
Optimize: casing both sides are provided with side and open plate。
The beneficial effects of the present invention is: instant invention overcomes the shortcomings such as the product size difference of conventional intermediate channel block cast product big, the demoulding is difficult, cloudy sand, stress concentration, initiative have developed effective technical scheme, the product made can directly use, avoid welding and the surface processing technique of follow-up link, greatly having saved cost, moreover, this product overall performance is good, intensity is high, it is possible to effectively increase the service life。
Accompanying drawing explanation
Fig. 1 is the structural representation of intermediate channel。
Fig. 2 is the schematic diagram of evaporative pattern (with occupy-place block)。
Fig. 3 is the structural representation of casing and intraware。
Fig. 4 is the sectional view of Fig. 3。
Fig. 5 is an up the structural representation of frame。
Detailed description of the invention
In the drawings: 1 is intermediate channel, 2 is shovel board ledge, and 3 is middle plate, and 4 is baffle, and 5 is right rail chair, and 6 is connecting plate, and 7 is left rail chair, and 8 is base plate, and 9 is evaporative pattern, and 10 is occupy-place block, and 11 is casing, and 12 are an up frame, and 13 is that plate is opened in side, and 14 is casting gate。
Embodiment:
During use, first manufacturing evaporative pattern 9, general evaporative pattern 9 material is foam, and is likely to occur cloudy husky position, fixing occupy-place block 10 at evaporative pattern 9。
The side of casing 11 being opened plate 13 close, from upper placement hoisting frame 12, place evaporative pattern 9 in hoisting frame 12, evaporative pattern 9 is vertically placed, and the ledge of the both sides of evaporative pattern 9 correspond to two sides and opens plate 13, refills the grains of sand, jolt ramming, re-closed casing 11。Being extracted out by air in casing with blower fan, form subnormal ambient, in such circumstances, the grains of sand become consolidation, form die。
Molten steel is injected cavity from the casting gate 14 of lower box, high-temperature molten steel fusing evaporative pattern 9, and occupy the position of evaporative pattern 9, form intermediate channel one-piece casting。
In above process, without the existence of occupy-place block 10, during the landfill grains of sand, the grains of sand cannot fill up cloudy husky position, so will form room outside evaporative pattern 9, during pouring molten steel, room will be occupied, formed " bulge ", namely product is scrapped, so, occupy-place block 10 is a very crucial technology: after having had occupy-place block 10, will not forming room, the profile after molten steel molding would not form " bulge "。
When intermediate channel 1 temperature is down to 900 DEG C-650 DEG C, stopping bleeding, plate 13, grains of sand pressure release are opened in the side taking out unpacking body 11 both sides, and propose to be placed on vibration platen by hoisting frame 12 and intermediate channel 1 with lifting device。Under 650 DEG C of-900 DEG C of environmental conditions, the grains of sand large area will not stick to product surface, provides convenience for following process。
In conventional dying casting process, there is demoulding difficulty, grains of sand adhesion is serious; later stage husky clearly time length, difficulty are big, high in cost of production phenomenon, and we find by studying, under 650 DEG C of-900 DEG C of temperature conditions; the grains of sand are substantially without sticking on one-piece casting, and the demoulding is smooth。Only needing nature to promote can the smooth demoulding。In order to realize the extraction under 650 DEG C-900 DEG C temperature higher strip parts, we are prefixed hoisting frame 12 to realize safe lifting。
Further, since the grains of sand are in front operation, form the die of consolidation, for ensureing that hoisting frame 12 is promoted smoothly, the grains of sand have to be made to be scattered, and for this, we devise the side of casing both sides and open plate 13, side is opened after plate 13 outwards winding, and grains of sand pressure release is loose, thus ensure that being smoothed out of extraction action。
After intermediate channel 1 one-piece casting is placed on vibration platen, with the frequency vibration 20 minutes of 50Hz, fully eliminate thermal stress。
Remove a small amount of grains of sand on surface, carry out the heat treatment of routine, mopping, get product。
Claims (5)
1. intermediate channel one piece casting production technology, is characterized in that:
A. evaporative pattern is manufactured according to the shape of intermediate channel；
B. outside evaporative pattern, smear high temperature finishes；
C. putting in casing by evaporative pattern, dress sand landfill, by sand body jolt ramming, evaporative pattern intracavity reserves sprue gate；Closed box；
D. bleed outward from casing, make casing be in subnormal ambient；
E. being imported from sprue gate by molten steel, evaporative pattern is melted evaporation, and steam is extracted out by negative pressure, and molten steel is full of evaporative pattern and is taken up space, and forms one-piece casting；
F. again one-piece casting is put into vibration platen so that it is vibration, to eliminate stress；
E. remove the one-piece casting surface grains of sand, carry out heat treatment, get product。
2. intermediate channel one piece casting production technology according to claim 1, is characterized in that: the position, corner of described evaporative pattern, is preset with occupy-place block。
3. intermediate channel one piece casting production technology according to claim 1 and 2, is characterized in that: presetting hoisting frame in casing, evaporative pattern is positioned at hoisting frame。
4. intermediate channel one piece casting production technology according to claim 3, is characterized in that: when extracting one-piece casting, its temperature is 650 DEG C-900 DEG C。
5. intermediate channel one piece casting production technology according to claim 1 and 2, is characterized in that: casing both sides are provided with side and open plate。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257957.3A CN105689646A (en) | 2016-04-22 | 2016-04-22 | Integral casting production technology for middle trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257957.3A CN105689646A (en) | 2016-04-22 | 2016-04-22 | Integral casting production technology for middle trough |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105689646A true CN105689646A (en) | 2016-06-22 |
Family
ID=56216574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610257957.3A Pending CN105689646A (en) | 2016-04-22 | 2016-04-22 | Integral casting production technology for middle trough |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105689646A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088643A (en) * | 2017-05-09 | 2017-08-25 | 孟州市鑫达制动材料有限公司 | Integral type coke-quenching car door steel alloy monoblock cast processing technology |
| CN107160102A (en) * | 2017-05-17 | 2017-09-15 | 四川广旺能源发展（集团）有限责任公司机械制造分公司 | A kind of coal face scraper conveyor intermediate channel manufacture craft |
| CN108213358A (en) * | 2018-01-12 | 2018-06-29 | 山东能源重装集团乾泰精密机械有限公司 | The lost foam casting sandbox and technique of a kind of Inblock cast middle slot |
| CN116174655A (en) * | 2023-05-04 | 2023-05-30 | 江苏久亿矿山机械有限公司 | Mining old chain regenerated alloy super-wear-resistant integral casting middle groove process |
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| US6957685B1 (en) * | 2003-05-07 | 2005-10-25 | Brunswick Corporation | Method of cleaning and of heat treating lost foam castings |
| CN101722276A (en) * | 2008-10-30 | 2010-06-09 | 梁作龙 | Method for producing high manganese steel casting and performing heat treatment instantaneously |
| CN101745606A (en) * | 2009-12-29 | 2010-06-23 | 上海应用技术学院 | Casting technology method for high-rigidity gray iron hydraulic valve body |
| CN202180172U (en) * | 2011-07-11 | 2012-04-04 | 铜陵万象汽车零部件有限公司 | Lost foam for casting radial inner-hole pipe shaped cast |
| CN105397028A (en) * | 2015-12-07 | 2016-03-16 | 天津威尔朗科技有限公司 | Method for evaporative pattern monoblock casting for middle groove member of scraper conveyer |
-
2016
- 2016-04-22 CN CN201610257957.3A patent/CN105689646A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6957685B1 (en) * | 2003-05-07 | 2005-10-25 | Brunswick Corporation | Method of cleaning and of heat treating lost foam castings |
| CN101722276A (en) * | 2008-10-30 | 2010-06-09 | 梁作龙 | Method for producing high manganese steel casting and performing heat treatment instantaneously |
| CN101745606A (en) * | 2009-12-29 | 2010-06-23 | 上海应用技术学院 | Casting technology method for high-rigidity gray iron hydraulic valve body |
| CN202180172U (en) * | 2011-07-11 | 2012-04-04 | 铜陵万象汽车零部件有限公司 | Lost foam for casting radial inner-hole pipe shaped cast |
| CN105397028A (en) * | 2015-12-07 | 2016-03-16 | 天津威尔朗科技有限公司 | Method for evaporative pattern monoblock casting for middle groove member of scraper conveyer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107088643A (en) * | 2017-05-09 | 2017-08-25 | 孟州市鑫达制动材料有限公司 | Integral type coke-quenching car door steel alloy monoblock cast processing technology |
| CN107160102A (en) * | 2017-05-17 | 2017-09-15 | 四川广旺能源发展（集团）有限责任公司机械制造分公司 | A kind of coal face scraper conveyor intermediate channel manufacture craft |
| CN108213358A (en) * | 2018-01-12 | 2018-06-29 | 山东能源重装集团乾泰精密机械有限公司 | The lost foam casting sandbox and technique of a kind of Inblock cast middle slot |
| CN116174655A (en) * | 2023-05-04 | 2023-05-30 | 江苏久亿矿山机械有限公司 | Mining old chain regenerated alloy super-wear-resistant integral casting middle groove process |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160622 |