CN102513503A - Iron die sand casting process - Google Patents
Iron die sand casting process Download PDFInfo
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- CN102513503A CN102513503A CN2011104175478A CN201110417547A CN102513503A CN 102513503 A CN102513503 A CN 102513503A CN 2011104175478 A CN2011104175478 A CN 2011104175478A CN 201110417547 A CN201110417547 A CN 201110417547A CN 102513503 A CN102513503 A CN 102513503A
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Abstract
The invention discloses an iron die sand casting process, specifically comprising the following steps: a) shooting sands to upper and lower sand boxes by a sand shooter, compacting, molding and then combining the boxes; b) casting molten iron into the sand box after the boxes are combined, wherein the temperature of the cast molten iron is controlled to be higher than 1400 degrees centigrade, the height from the casting ladle to the pouring cup is controlled within the range of 8-10cm; and c) vibrating to de-mold after the casting process, and processing the cast. Finally, the cast is obtained. The temperature of the sand box and the electric heating casting sand mold are controlled strictly, the pressure of the air compressor of the sand shooter and the temperature of the sand shooter further are controlled strictly. In this way, the stable sand shape after the sand shooting process and the standard structure are ensured, and nearly no mending is required. The cast of the invention is cast and molded fast, the compact degree of the cast is ensured, and the clearance is absent in the cast, so that the rigidity of the cast is qualified.
Description
Technical field
The present invention relates to casting field, specifically is a kind of device for sand coated iron mould casting technique.
Background technology
Casting is one of main method of manufactured parts blank; Its forming method mainly is with the ironware heat fused, it is become have mobile iron liquid, is cast to then in the casting mold die cavity with definite shape; Under the effect of gravity, fill with die cavity, cool off and be frozen into foundry goods or part.Traditional casting technique may further comprise the steps: A, make the mould that molding and core making is used according to the shape of product; B, the upper and lower sandbox that mould is put into sandbox carry out mould assembling after back-up sand, consolidation, the molding; C, the iron liquid casting after will melting are gone in the die cavity in the sandbox; Last sand fallout cleaning foundry goods gets foundry goods.At present, the casting hardness that this technology is made is poor, thereby and casting sand type structural stability is poor, structure is nonstandard causes the casting structure behind the foundry goods not meet standard, influence the qualification rate of foundry goods.
Summary of the invention
The technical problem that the present invention will solve provides a kind of device for sand coated iron mould casting technique, solves the existing problem that the casting technique casting finished products is of poor quality, qualification rate is low.
Technical scheme of the present invention is:
A kind of device for sand coated iron mould casting technique, body may further comprise the steps:
(1), earlier sandbox is baked between 170-190 ℃, the electric heating mould is heated between 180-250 ℃, and electric heating mould mould intracavity wall is smeared releasing agent;
(2), cope and drag box are positioned over respectively in the corresponding electric heating mould die cavity; Compress cope and drag box respectively with two blasting units penetrating the sand machine then; And in cope and drag box, penetrate sand respectively, blasting unit and upper and lower sandbox compressed the time smaller or equal to 10 seconds;
(3), penetrate sand and accomplish after, molding is carried out the mould assembling operation with upper and lower sandbox then; Carry out the sandbox after the mould assembling fastening then; Place cup then and pour into a mould, the temperature of cast iron liquid is controlled at greater than 1400 ℃, and casting ladle is apart from the height control 8-10cm of cup;
(4), behind the casting complete, leave standstill a period of time, sandbox is positioned on the shaking platform vibrates, foundry goods is come off;
(5), the check foundry goods, certified products carry out surface treatment to it, deliver to heat-treatment of annealing then after, must get finished product cast.
Described releasing agent is selected high-temperature silicon oil for use.
The described pressure of penetrating the air compressor machine of sand machine is controlled to be more than the 0.6Mpa, and the temperature of penetrating the sand machine is controlled to be 200-230 ℃.
The sand number of times of penetrating of described blasting unit is 3 times, and the first time and secondary time interval are 2-3 second, and the second time and the time interval for the third time are 1-2 second.
After penetrating sand and accomplishing, this place sand mold consolidation, smooth, loosening is guaranteed in finishing cup placed side, penetrates 5-10 second behind the sand, in the cup placed side or penetrate on the sand mouth detection molding sand hardness so that determine whether can molding.
After the molding, when the sand mold of upper and lower sandbox damages, due sand mold shape and size are arrived in patching, and make its curing.
The sandbox of the fastening employing of described sandbox after with mould assembling is positioned on the small rail car, clamps with fastening bolt.
The mode of adopt big stream during described the cast, watering soon, and make cup fill up iron liquid, cast does not have cutout midway.
Behind the described casting complete, left standstill 4-6 minute, check cup iron liquid setting condition then, when solidifying fully, sandbox is positioned on the shaking platform vibrates, foundry goods is come off.
The surface treatment of described qualified foundry goods is adopted Shot Blasting and is cleared up scab.
The temperature of the strict control of the present invention sandbox and electric heating die casting sand mold, and the pressure of penetrating sand machine air compressor machine with penetrate the also all strict control of sand machine temperature, guaranteed to penetrate that sand mold behind the sand is stablized, construction standard, almost need not to repair; The temperature of the molten iron of foundry goods of the present invention also is controlled to be greater than 1400 ℃, and casting fast, guarantees the packing of foundry goods, tight in the middle of the foundry goods, thus the hardness of guaranteeing foundry goods is up to standard.
The specific embodiment
A kind of device for sand coated iron mould casting technique specifically may further comprise the steps:
(1), inspection pressure and the temperature of penetrating the sand machine of penetrating the air compressor machine of sand machine, guarantee that the air compressor machine Pressure gauge shows pressure more than 0.6Mpa, the temperature of penetrating sand machine temperature control instrument is 200-230 ℃;
(2), sandbox is baked between 170-190 ℃ with the carbon stove, detect with the infrared thermometry rifle, sandbox barbecue temperature is wanted evenly; During the block sequences cast, utilize the sandbox waste heat, detect the sandbox temperature with temperature-measuring gun, reaching above-mentioned sandbox temperature can use;
(3), the electric heating mould is heated between 180-250 ℃, and with temperature around the temperature-measuring gun detection electric heating mould, smears releasing agent at electric heating mould mould intracavity wall then, and blow away the foreign material on sandbox contact-making surface and the board;
(4), cope and drag box are positioned over respectively in the corresponding electric heating mould die cavity; Compress cope and drag box respectively with two blasting units penetrating the sand machine then, and in cope and drag box, penetrate sand respectively, the sand number of times of penetrating of blasting unit is 3 times; The first time and secondary time interval are 2-3 second; The second time and the time interval for the third time are 1-2 second, penetrate and note inflation sand cylinder residue sand amount in the sand process at any time, in time send sand to compensate; And blasting unit and upper and lower sandbox compressed the time smaller or equal to 10 seconds, avoided scorching penetrating sand mouth rubber washer;
(5), penetrate sand and accomplish after, this place sand mold consolidation, smooth, loosening is guaranteed in finishing cup placed side, penetrates 5-10 second behind the sand, in the cup placed side or penetrate on the sand mouth detection molding sand hardness so that determine whether can molding;
(6), after the molding, when the sand mold of upper and lower sandbox damages, patching to due sand mold shape and size, and is made its curing; As it is big to repair difficulty, must destroy sand mold, penetrates sand again;
(7), remove floating sand, the impurity of upper and lower sandbox, then with upper and lower sandbox mould assembling, and be positioned on the small rail car, clamp with fastening bolt, need both sides simultaneously fastening during clamping, prevent to stick up type, cause runout;
(8), let slip filter screen and cup at the sprue gate of sandbox; With the fixing cup and cover end face, top box flange face venthole of residual sand, pour into a mould iron liquid then, the temperature of cast iron liquid is controlled at greater than 1400 ℃; The mode of adopt big stream during cast, watering soon; And making cup fill up iron liquid, cast does not have cutout midway, and guarantees that casting ladle is 8-10cm apart from the height of cup;
(9), behind the casting complete, left standstill 4-6 minute, unclamp fastening bolt; Check cup iron liquid setting condition then; When solidifying fully, beat drag box with 12 pounds of iron hammers earlier, lift cope after doing slightly to vibrate and to shaking platform, vibrate; Foundry goods is come off, continue moulding when sandbox is cooled to meet molding temperature;
(10), when foundry goods is cooled to normal temperature, beat dead head, the removal dead head with 12 pounds of iron hammers; Check foundry goods then, certified products grind off burr with manual sanding machine, use hanging shot-blasting machine ball blast at last; The cleaning scab, after send heat-treatment of annealing, finished product cast.
Claims (10)
1. device for sand coated iron mould casting technique is characterized in that: specifically may further comprise the steps:
(1), earlier sandbox is baked between 170-190 ℃, the electric heating mould is heated between 180-250 ℃, and electric heating mould mould intracavity wall is smeared releasing agent;
(2), cope and drag box are positioned over respectively in the corresponding electric heating mould die cavity; Compress cope and drag box respectively with two blasting units penetrating the sand machine then; And in cope and drag box, penetrate sand respectively, blasting unit and upper and lower sandbox compressed the time smaller or equal to 10 seconds;
(3), penetrate sand and accomplish after, molding is carried out the mould assembling operation with upper and lower sandbox then; Carry out the sandbox after the mould assembling fastening then; Place cup then and pour into a mould, the temperature of cast iron liquid is controlled at greater than 1400 ℃, and casting ladle is apart from the height control 8-10cm of cup;
(4), behind the casting complete, leave standstill a period of time, sandbox is positioned on the shaking platform vibrates, foundry goods is come off;
(5), the check foundry goods, certified products carry out surface treatment to it, deliver to heat-treatment of annealing then after, must get finished product cast.
2. a kind of device for sand coated iron mould casting technique according to claim 1, it is characterized in that: described releasing agent is selected high-temperature silicon oil for use.
3. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: the described pressure of penetrating the air compressor machine of sand machine is controlled to be more than the 0.6Mpa, and the temperature of penetrating the sand machine is controlled to be 200-230 ℃.
4. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: the sand number of times of penetrating of described blasting unit is 3 times, and the first time and secondary time interval are 2-3 second, and the second time and the time interval for the third time are 1-2 second.
5. a kind of device for sand coated iron mould casting technique according to claim 1; It is characterized in that: after penetrating the sand completion; Finishing cup placed side; Guarantee this place's sand mold consolidation, smooth, loosening, penetrate 5-10 second behind the sand, in the cup placed side or penetrate and detect molding sand hardness on the sand mouth so that determine whether can molding.
6. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: after the molding, when the sand mold of upper and lower sandbox damages, due sand mold shape and size are arrived in patching, and make its curing.
7. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: the sandbox of the fastening employing of described sandbox after with mould assembling is positioned on the small rail car, clamps with fastening bolt.
8. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: the mode of adopt big stream during described the cast, watering soon, and make cup fill up iron liquid, cast does not have cutout midway.
9. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: behind the described casting complete, left standstill 4-6 minute; Check cup iron liquid setting condition then; When solidifying fully, sandbox is positioned on the shaking platform vibrates, foundry goods is come off.
10. a kind of device for sand coated iron mould casting technique according to claim 1 is characterized in that: the surface treatment of described qualified foundry goods is adopted Shot Blasting and is cleared up scab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104175478A CN102513503A (en) | 2011-12-14 | 2011-12-14 | Iron die sand casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104175478A CN102513503A (en) | 2011-12-14 | 2011-12-14 | Iron die sand casting process |
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| CN102513503A true CN102513503A (en) | 2012-06-27 |
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| CN2011104175478A Pending CN102513503A (en) | 2011-12-14 | 2011-12-14 | Iron die sand casting process |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921902A (en) * | 2012-11-13 | 2013-02-13 | 柳州市勤友贸易有限公司 | Composite shaping technique method of iron pattern coated sand and iron type core assembly |
| CN103639370A (en) * | 2013-11-29 | 2014-03-19 | 杨国能 | Casting method for flywheel |
| CN104289677A (en) * | 2014-10-15 | 2015-01-21 | 山西临汾诚信铸造有限公司 | Iron pattern sand-lined casting process |
| CN104785728A (en) * | 2015-04-27 | 2015-07-22 | 海安铸鑫金属制品有限公司 | Gear casting processing method |
| CN104912113A (en) * | 2015-06-23 | 2015-09-16 | 昌邑中铸铸业有限公司 | Well lid and technological method thereof |
| CN105108070A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of non-transmission end of traction motor on subway locomotive |
| CN105108060A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of transmission end of traction motor on subway locomotive |
| CN105328125A (en) * | 2015-09-26 | 2016-02-17 | 侯马市晋烽机械铸造有限公司 | Casting method of rotor pressing ring for metro locomotive |
| CN105562618A (en) * | 2015-12-21 | 2016-05-11 | 宁波金汇精密铸造有限公司 | Manufacturing method of brake disc |
| CN109128023A (en) * | 2018-08-18 | 2019-01-04 | 南安市春安机械铸造有限公司 | A kind of big ancient cooking vessel gear casting technique |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921902A (en) * | 2012-11-13 | 2013-02-13 | 柳州市勤友贸易有限公司 | Composite shaping technique method of iron pattern coated sand and iron type core assembly |
| CN102921902B (en) * | 2012-11-13 | 2014-12-03 | 柳州市勤友贸易有限公司 | Composite shaping technique method of iron pattern coated sand and iron type core assembly |
| CN103639370A (en) * | 2013-11-29 | 2014-03-19 | 杨国能 | Casting method for flywheel |
| CN103639370B (en) * | 2013-11-29 | 2015-07-22 | 杨国能 | Casting method for flywheel |
| CN104289677A (en) * | 2014-10-15 | 2015-01-21 | 山西临汾诚信铸造有限公司 | Iron pattern sand-lined casting process |
| CN104785728A (en) * | 2015-04-27 | 2015-07-22 | 海安铸鑫金属制品有限公司 | Gear casting processing method |
| CN104912113A (en) * | 2015-06-23 | 2015-09-16 | 昌邑中铸铸业有限公司 | Well lid and technological method thereof |
| CN104912113B (en) * | 2015-06-23 | 2018-05-11 | 昌邑中铸铸业有限公司 | A kind of well lid and its process |
| CN105108070A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of non-transmission end of traction motor on subway locomotive |
| CN105108060A (en) * | 2015-09-26 | 2015-12-02 | 侯马市晋烽机械铸造有限公司 | Method for casting end cap of transmission end of traction motor on subway locomotive |
| CN105328125A (en) * | 2015-09-26 | 2016-02-17 | 侯马市晋烽机械铸造有限公司 | Casting method of rotor pressing ring for metro locomotive |
| CN105562618A (en) * | 2015-12-21 | 2016-05-11 | 宁波金汇精密铸造有限公司 | Manufacturing method of brake disc |
| CN105562618B (en) * | 2015-12-21 | 2018-01-16 | 宁波金汇精密铸造有限公司 | The preparation method of brake disc |
| CN109128023A (en) * | 2018-08-18 | 2019-01-04 | 南安市春安机械铸造有限公司 | A kind of big ancient cooking vessel gear casting technique |
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Application publication date: 20120627 |