CN1603028A - Production process of pneumatic casting metal products - Google Patents
Production process of pneumatic casting metal products Download PDFInfo
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- CN1603028A CN1603028A CN 200410054294 CN200410054294A CN1603028A CN 1603028 A CN1603028 A CN 1603028A CN 200410054294 CN200410054294 CN 200410054294 CN 200410054294 A CN200410054294 A CN 200410054294A CN 1603028 A CN1603028 A CN 1603028A
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- air inlet
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- molten jar
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Abstract
The invention supplies a manufacturing technique of the aerodynamic pouring metal product belongs to the machine manufacturing technology field. It solves the problems in the existing manufacturing technique that the density of the surface of the work piece is not high, the shape is not plump, and the cost is high. The manufacturing technique of the aerodynamic pouring metal product in The invention discloses that dividing it into left and right module; cleaning their inner cavity; setting sand core in the inner cavity of the metal module; uniting the left and right module and moving it to a jar with the liquid entering opening of the metal module over against the mouthpiece of the jar; bleeding to form air pressure at the air intake to make the melted metal solution flow from the mouthpiece of the jar up to the inner cavity of the metal module until it is full; moving the metal module away from the mouthpiece of the jar after it is cooled to forming; and opening the module to take out the metal produce. To produce the metal product the manufacturing technique is adopted. Its advantages are that the rate of finished products of its product is high, the electric plating cost is reduced, and the working strength of the polishing is reduced.
Description
Technical field
The invention belongs to machinery manufacturing technology field, the production technology of the pneumatic casting metal goods of particularly a kind of usefulness.
Background technology
At present, for the production of metallic articles such as copper ball valve, normally adopt the technology of gravity-assist pouring.This technology is to utilize the gravity of metallic solution self as pressure, makes it flow to each position of mould.Existing manufacturing technique exists many weak points, mainly shows
1, the superficial density of workpiece is not high, sand holes or pore often occur;
2, because pressure is lower, make the workpiece profile of shaping not full, the unclear wash rice of profile;
3, when polishing, because of the surface quality of workpiece is not high, need to increase the degree of depth of polishing, improved production cost of products.
Summary of the invention
The objective of the invention is at the existing the problems referred to above of metal current product producing process, a kind of production technology of pneumatic casting metal goods of novelty is provided, make it have technology rationally, characteristics such as surface of the work density height, pore-free and sand holes, the profile of producing be full.
The production technology of pneumatic casting metal goods of the present invention realizes through the following steps:
(1), the used metal pattern of cast is made up of left mould and right mould two parts, separates left and right sides mould, the inner chamber of left and right sides mould is cleaned;
(2), in the inner chamber of metal pattern, place core;
(3), close and close left and right sides mould and make metal pattern become as a whole, and move on vertically upward molten jar of a molten jar of interface, the inlet that makes metal pattern is over against molten jar of interface;
(4), on molten jar, an air inlet is arranged, air inlet and an air inlet pipe are joined, and make air inlet produce air pressure by the air inlet pipe venting and make the metallic solution that has dissolved in molten jar upwards inject the inner chamber of metal pattern until whole inner chamber is filled with from molten jar interface;
(5), the air pressure that keeps molten jar to go up the air inlet place makes the metallic solution cooling shaping in the metal pattern inner chamber;
(6), metal pattern is moved apart molten jar interface, and metallic article is taken out in die sinking.
In the production technology of above-mentioned pneumatic casting metal goods, the air pressure at described air inlet place is low pressure.Preferably between 0.8～1.2mPa.
In the production technology of above-mentioned pneumatic casting metal goods, the time of metallic solution cooling shaping is 20 seconds to 100 seconds in the described step 5.
In the production technology of above-mentioned pneumatic casting metal goods, the other end of air inlet pipe can be connected on air pump or the gas cylinder.Utilize gas that air pump or gas cylinder produce certain pressure by air inlet pipe to the air inlet place, oppress the metallic solution that has dissolved in molten jar, make the inner chamber of its injection metal die.
Compared with prior art, adopt this production technology pan in next life metal products, its advantage is:
1, the yield rate height of product: be shaped by low-pressure pneumatic, its surface of the work density height, pore-free and sand holes, yield rate can reach more than 98%;
2, reduce electroplating cost: common gravity-assist pouring technology is not because surface of the work density is not high, must acid coppering etc. filling up its deficiency, and this production technology can be saved this technology because of surface of the work density height, therefore can reduce cost;
3, reduce the working strength of polishing: because workpiece is to be shaped under certain pressure, the profile of workpiece is full, and wheel is cleaned up wash rice, can reduce the degree of depth of polishing, reduces its working strength;
4, enhance productivity: after adopting this production technology, in metal pattern, a plurality of inner chambers can be set, once produce several products,, reduce product cost to enhance productivity.
Description of drawings
Accompanying drawing is to adopt this production technology to produce the device schematic diagram of metallic article.
Among the figure, 1, metal pattern; 11, left mould; 12, right mould; 13, inner chamber; 14, dead head; 15, inlet; 2, core; 3, molten jar; 31, molten jar of interface; 4, solution; 5, air inlet; 6, pressure maintaining valve; 7, gas cylinder 8, return-air valve 81, muffler; 9, air inlet pipe; 10, heating.
The specific embodiment
As shown in the figure, when adopting this production technology to produce metallic article, there is heating 10 in molten jar 3 the outside.Heat for 10 pairs molten jar 3 by heating, make the metal in molten jar 3 dissolve into metallic solution 4.
In the present embodiment, the air inlet 5 on the molten jar 3 connects an air inlet pipe 9, and the other end of air inlet pipe 9 joins by a pressure maintaining valve 6 and gas cylinder 7.The gas that certain pressure arranged in the gas cylinder 7 flows to molten jar 3 air inlet 5 after by pressure maintaining valve 6 and air inlet pipe 9.Pressure maintaining valve 6 plays pressure stabilization function, makes the air pressure at air inlet 5 places keep stable.In the present embodiment, the air pressure voltage stabilizing is about 1mPa.
On air inlet pipe 9, go back muffler 81 of tap, return-air valve 8 is arranged on the muffler 81.Behind casting complete, the gas that enters molten jar 3 can outwards discharge by muffler 81.
Present embodiment is to adopt production technology provided by the invention at the production of copper ball valve body, and finishes by device shown in the drawings.Detailed process is: separate left mould 11 and right mould 12, their inner chamber 13 is cleaned, and place core 2 in inner chamber 13, close then and close left and right sides mould, move on molten jar 3, the inlet 15 of metal pattern is in over against the position of molten jar of interface 31; Add thermosol jar 3 by heating 10, the copper in molten jar 3 is dissolved, its temperature reaches 1200 ℃ usually; Then, open pressure maintaining valve 6, make gas cylinder 7 interior gases enter molten jar 3 air inlet 5 places by air inlet pipe 9, and compressing copper solution 4, copper solution 4 is entered in the inner chamber 13, till this process continues to that copper solution 4 is filled with whole inner chamber 13 and emerges from the dead head 14 on metal pattern 1 top from the inlet 15 of molten jar interface 31 by metal pattern; At this moment, close pressure maintaining valve 6, make gas cylinder 7 stop air feed, and make copper solution 4 cooling shapings in the metal pattern 1, the time of cooling shaping is 30 seconds; At last, open return-air valve 8, the gas in the air inlet pipe 9 is outwards discharged by muffler 81, and metal pattern 1 is moved apart molten jar of interface 31, the valve body of ball valve is taken out in die sinking.
Claims (5)
1, a kind of production technology of pneumatic casting metal goods is characterized in that, this technology realizes through the following steps:
(1), the used metal pattern (1) of cast is made up of left mould (11) and right mould (12) two parts, separates left and right sides mould, the inner chamber (13) of left and right sides mould is cleaned;
(2), in the inner chamber (13) of metal pattern (1), place core (2);
(3), close and close left and right sides mould and make metal pattern (1) become as a whole, and move on a molten jar of interface (31) molten jar (3) vertically upward, the inlet (15) that makes metal pattern (1) is over against molten jar of interface (31);
(4), on molten jar (3), an air inlet (5) is arranged, air inlet (5) joins with an air inlet pipe (9), makes air inlet (5) produce air pressure by air inlet pipe (9) venting and makes the metallic solution (4) that has dissolved in molten jar (3) upwards inject the inner chamber (13) of metal pattern (1) until whole inner chamber (13) is filled with from molten jar of interface (31);
(5), the air pressure that keeps molten jar (3) last air inlet (5) to locate makes metallic solution (4) cooling shaping in the metal pattern inner chamber (13);
(6), metal pattern (1) is moved apart molten jar interface (31), and metallic article is taken out in die sinking.
2, the production technology of pneumatic casting metal goods according to claim 1 is characterized in that, the air pressure that described air inlet (5) is located is low pressure.
3, the production technology of pneumatic casting metal goods according to claim 2 is characterized in that, the air pressure that described air inlet (5) is located is between 0.8～1.2mPa.
According to the production technology of claim 1,2 or 3 described pneumatic casting metal goods, it is characterized in that 4, the time of metallic solution in the described step 5 (4) cooling shaping is 20 seconds to 100 seconds.
According to the production technology of claim 1,2 or 3 described pneumatic casting metal goods, it is characterized in that 5, the other end of described air inlet pipe (9) is connected on air pump or the gas cylinder (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054294 CN1603028A (en) | 2004-09-06 | 2004-09-06 | Production process of pneumatic casting metal products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410054294 CN1603028A (en) | 2004-09-06 | 2004-09-06 | Production process of pneumatic casting metal products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1603028A true CN1603028A (en) | 2005-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410054294 Pending CN1603028A (en) | 2004-09-06 | 2004-09-06 | Production process of pneumatic casting metal products |
Country Status (1)
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| CN (1) | CN1603028A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225459A (en) * | 2011-06-14 | 2011-10-26 | 中南大学 | Calcium ingot smelting and pouring system and method for preparing metal calcium ingot |
| CN105834400A (en) * | 2016-05-03 | 2016-08-10 | 刘加兴 | Mold structure and production technique for upward-poured and low pressure-cast motorcycle aluminum wheel |
| CN108311668A (en) * | 2018-03-13 | 2018-07-24 | 中信戴卡股份有限公司 | A kind of aluminum alloy low-pressure casting device and technique |
-
2004
- 2004-09-06 CN CN 200410054294 patent/CN1603028A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225459A (en) * | 2011-06-14 | 2011-10-26 | 中南大学 | Calcium ingot smelting and pouring system and method for preparing metal calcium ingot |
| CN105834400A (en) * | 2016-05-03 | 2016-08-10 | 刘加兴 | Mold structure and production technique for upward-poured and low pressure-cast motorcycle aluminum wheel |
| CN108311668A (en) * | 2018-03-13 | 2018-07-24 | 中信戴卡股份有限公司 | A kind of aluminum alloy low-pressure casting device and technique |
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