CN104550733A - Composite casting technology capable of preventing neck part of valve cap of low-temperature brake valve from being deformed - Google Patents
Composite casting technology capable of preventing neck part of valve cap of low-temperature brake valve from being deformed Download PDFInfo
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- CN104550733A CN104550733A CN201510016475.4A CN201510016475A CN104550733A CN 104550733 A CN104550733 A CN 104550733A CN 201510016475 A CN201510016475 A CN 201510016475A CN 104550733 A CN104550733 A CN 104550733A
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- 238000005266 casting Methods 0.000 title claims abstract description 26
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 238000005554 pickling Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 15
- 239000002344 surface layer Substances 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 12
- 230000008018 melting Effects 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000080 wetting agent Substances 0.000 claims description 9
- 241001622925 Acacia coriacea Species 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 241001477873 Cornus sanguinea Species 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 3
- 241000220317 Rosa Species 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 3
- 230000003203 everyday effect Effects 0.000 claims description 3
- 239000006052 feed supplement Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 2
- 239000011819 refractory material Substances 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 238000005422 blasting Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Mold Materials And Core Materials (AREA)
- Valve Housings (AREA)
Abstract
The invention discloses a composite casting technology capable of preventing the neck part of a valve cap of a low-temperature brake valve from being deformed. The composite casting technology comprises the following steps: A, manufacturing a wax mold; B, manufacturing a mold shell; C, roasting the mold shell; D, smelting and pouring; and E, carrying out aftertreatment, namely, cutting, polishing, carrying out thermal treatment, acid pickling and shot blasting working procedures. The deformation probability and times of the type of products can be reduced by adopting the composite casting technology capable of preventing the neck part of the valve cap of the low-temperature brake valve from being deformed, and the product yield is improved.
Description
Technical field
The present invention relates to a kind of composite casting technology preventing low-temperature brake valve valve gap neck deformation, particularly relate to the composite manufacturing technology of the low-temperature brake valve valve gap of a kind of bore within 400.
Background technology
Because low-temperature brake valve valve gap needs to use at low ambient temperatures (detected temperatures that generally will meet is-240 DEG C), for this reason, on valve gap, end support all adopts integrated casting structure, and its support generally can not be less than 50 centimetres.Therefore, no matter be in the step of silica sol precision casting or waterglass composite casting, the moulding of wax part, manufacture shell, burn shell and pour into a mould the careless slightly valve gap inner chamber and valve gap and support link (i.e. valve gap neck) of will causing in these links and be out of shape, due to the particularity of its structure after distortion, shaping is afterwards substantially invalid, causes can not get effective control with the disqualification rate of product during conventional fine casting technique.
Summary of the invention
In view of the deficiency of background technology, technical problem to be solved by this invention is to provide a kind of composite casting technology preventing low-temperature brake valve valve gap neck deformation that can prevent low-temperature brake valve valve gap neck deformation.
For this reason, technical scheme of the present invention is: the composite casting technology preventing low-temperature brake valve valve gap neck deformation, is characterized in that: comprise the following steps:
A, making wax pattern
1) will penetrate wax room indoor temperature controls at 24 ± 3 DEG C, wax rifle is aimed at mould casting hole, opens valve by the slack wax pressure injection of 45 DEG C-48 DEG C in mold cavity, slack wax Pressure Casting is 0.3-0.5MPa, and pressurize 5-10 second, make slack wax be pressed into each corner of die cavity completely, valve-off, remove mould, and mould is put into the frozen water of 1 DEG C-5 DEG C, allow slack wax cool fast in die cavity, cool time is at 5-10 minute, then form removal, takes out wax pattern and puts into frozen water continuation cooling;
2) wax pattern is repaired: adopt special fash and other unnecessary projections of repairing wax spatula removal wax pattern surface or inner chamber, and fill up wax pattern rejected region with rare wax, and wiping is smooth, adapted acetone wiping if desired, after cleaning out and detect qualified after, carry out wax pattern assembling;
3) wax pattern group tree: during group tree, between wax-pattern, minimal gaps must control at more than 15MM, wax-pattern ingate is wanted tightly with weld between wax-pattern, must not have spine and gap;
B, manufacture shell
1) temperature of surface layer room is controlled at≤65 DEG C, first add Ludox during configuration surface layer, more progressively add JFC wetting agent, the quality of JFC wetting agent accounts for the 0.3%-0.5% of gross mass, JFC wetting agent mixes with zirconium powder and stirs, and finally adds and accounts for the defoamer that gross mass is 0.15%-2%;
2) the whole virgin material of surface layer should stir more than 24 hours, measure surface layer viscosity every day, measure with domestic No. 4 cups when measuring viscosity, should control in regulation range of viscosities, Ludox surface layer > drying time 8 hours, the working space temperature of transition zone and backing layer remains on≤50 DEG C, drying time > 12 hours;
3) whether dried necessarily see when being stained with transition zone, and must preimpregnation be carried out, make shell be not easy layering, and degree of being stained with must ensure at 20 ± 2 seconds;
4) when being stained with more than three layers, must adjust viscosity, degree of being stained with must ensure at 13 ± 2 seconds;
5) be stained with more than five layers and use waterglass coating, proportioning is allocated in the ratio of powder liquid quality 1:1, and degree of being stained with must ensure at 30 ± 2 seconds, and hardening bath aluminium chloride density is 1.8-1.2, and firm time is 1 hours, and more than seven layers must extend firm time;
6) make shell: must be scraped off by unnecessary slurries with iron wire or peg wood after valve gap neck and top screws lead to the hole site are stained with slurry, prevent blocking; Simultaneously, in order to strengthen investment shell intensity in shell processed, carry out systematicness when being stained with layer 5 clockwise with No. six iron wire cisoid shells and be wound around reinforcing, then preimpregnation, be stained with slurry, be stained with sand, drying and follow-up dewaxing, with iron wire or peg wood, unnecessary slurries must be scraped off after being stained with slurry, prevent from betting contest and carry out systematicness clockwise with No. six iron wire cisoid shells being wound around that to reinforce operation be all different with other part process for making shell, be prevent low-temperature brake valve lid neck deformation meet twice critical process in casting technique;
C, Baking
1), clean out shell and water peristoma, be strictly on guard against that the foreign material such as sand are fallen in shell; 2), be carefully inverted downwards by shell cup, load in roaster, by technological requirement setting sintering temperature, during temperature to 600 DEG C, close fire door (mainly for the first stove), roasting shell is in white or rose look; E, roasting will coordinate with melting, and when guaranteeing cast, shell reaches the requirement temperature of cast 1050 DEG C-1100 DEG C, temperature retention time >=1.5 hour;
D, melting and cast
1) prepare burden: a, mill run are prepared burden---virgin material: foundry returns >=2:3; Converted products is prepared burden---virgin material: foundry returns >=1:1; C, remarks: all enter furnace charge requirement be maintained in the clean condition, substantially carry out non-corroding, without greasy dirt, no-sundries, without sand slag or the globule attachment or phenomenon of making moist; First the virgin material that bundling is good is added time reinforced and dissolves, after add foundry returns;
2) stainless steel melting: a such as 304,316,80% load melting after, add electrolysis ferromanganese 400g pre-deoxidation, then add aluminum strip 200g, slag making removes the gred, and sampling blocking is tested; After b, chemical examination, carry out feed supplement according to lacked element, treat 100% fusing, temperature is at 1550 DEG C-1580 DEG C, reduce EF power to 80KW, add multi-element composite deoxidant 800g and carry out expanding deoxidation, and cover deslagging agent 2-3 minute, terminate to know slag, cover deslagging agent again, slag making deslagging, sample examination, until completely qualified; C, completely qualified after, improve power and be warmed up to about 1600 DEG C, add 400g multi-element composite deoxidant, and cover deslagging agent simultaneously, powered-down leaves standstill, foreign material in molten steel are floated, skim 3-4 time rapidly, when survey molten steel temperature is applicable to pouring temperature, insulation tapping completes cast fast, pay special attention to during cast: flume must clean, smooth, without steam, must first dry burned when lifting with parcel;
E, post processing: carry out routine cutting, polishing, heat treatment, pickling, ball blast operation.
The composite casting technology preventing low-temperature brake valve valve gap neck deformation provided by the invention, can reduce the high defect rate that low-temperature brake valve valve gap brings because of neck deformation, thus can enhance productivity, and reduces manufacturing cost.
Detailed description of the invention
The composite casting technology preventing low-temperature brake valve valve gap neck deformation provided by the invention, comprises the following steps:
A, making wax pattern
1) will penetrate wax room indoor temperature controls at 24 ± 3 DEG C, wax rifle is aimed at mould casting hole, opens valve by the slack wax pressure injection of 45 DEG C-48 DEG C in mold cavity, slack wax Pressure Casting is 0.3-0.5MPa, and pressurize 5-10 second, make slack wax be pressed into each corner of die cavity completely, valve-off, remove mould, and mould is put into the frozen water of 1 DEG C-5 DEG C, allow slack wax cool fast in die cavity, cool time is at 5-10 minute, then form removal, takes out wax pattern and puts into frozen water continuation cooling;
2) wax pattern is repaired: adopt special fash and other unnecessary projections of repairing wax spatula removal wax pattern surface or inner chamber, and fill up wax pattern rejected region with rare wax, and wiping is smooth, adapted acetone wiping if desired, after cleaning out and detect qualified after, carry out wax pattern assembling;
3) wax pattern group tree: during group tree, between wax-pattern, minimal gaps must control at more than 15MM, and wax-pattern ingate wants tight with welding between wax-pattern, must not have spine and gap, assembling wax-pattern time must strictly by engineer organize tree requirement and technological specification carry out, the phenomenons such as wax oozes must not be had to occur;
B, manufacture shell
1) temperature of surface layer room is controlled at≤65 DEG C, first add Ludox during configuration surface layer, more progressively add JFC wetting agent, the quality of JFC wetting agent accounts for the 0.3%-0.5% of gross mass, JFC wetting agent mixes with zirconium powder and stirs, and finally adds and accounts for the defoamer that gross mass is 0.15%-2%;
2) the whole virgin material of surface layer should stir more than 24 hours, measure surface layer viscosity every day, measure with domestic No. 4 cups when measuring viscosity, should control in regulation range of viscosities, Ludox surface layer > drying time 8 hours, the working space temperature of transition zone and backing layer remains on≤50 DEG C, drying time > 12 hours;
3) whether dried necessarily see when being stained with transition zone, and must preimpregnation be carried out, make shell be not easy layering, and degree of being stained with must ensure at 20 ± 2 seconds;
4) when being stained with more than three layers, must adjust viscosity, degree of being stained with must ensure at 13 ± 2 seconds;
5) be stained with more than five layers and use waterglass coating, proportioning is allocated in the ratio of powder liquid quality 1:1, and degree of being stained with must ensure at 30 ± 2 seconds, and hardening bath aluminium chloride density is 1.8-1.2, and firm time is 1 hours, and more than seven layers must extend firm time;
6) shell is made: must be scraped off by unnecessary slurries with iron wire or peg wood after valve gap neck and top screws lead to the hole site are stained with slurry, blocking is prevented (to note, mainly flame can be made for considering to penetrate roasting from through hole in Baking process, shell is heated evenly in roasting process, improves roasting and moulding by casting quality); Simultaneously, in order to strengthen investment shell intensity in shell processed, carry out systematicness when being stained with layer 5 clockwise with No. six iron wire cisoid shells and be wound around reinforcing, then preimpregnation, be stained with slurry, be stained with sand, drying and follow-up dewaxing, with iron wire or peg wood, unnecessary slurries must be scraped off after being stained with slurry, prevent from betting contest and carry out systematicness clockwise with No. six iron wire cisoid shells being wound around that to reinforce operation be all different with other part process for making shell, be prevent low-temperature brake valve lid neck deformation meet twice critical process in casting technique;
C, Baking
1), first check before roasting roaster and control instrument whether normal, whether table totally smooth, and whether flue smooth and easy; Detect whether shell is perfect falls into, defective shell must be repaired complete, aplasticly scraps process; Clean out shell and water peristoma, be strictly on guard against that the foreign material such as sand are fallen in shell; 2), be carefully inverted downwards by shell cup, load in roaster, by technological requirement setting sintering temperature, during temperature to 600 DEG C, close fire door (mainly for the first stove), roasting shell is in white or rose look; E, roasting will coordinate with melting, and when guaranteeing cast, shell reaches the requirement temperature of cast 1050 DEG C-1100 DEG C, temperature retention time >=1.5 hour;
D, melting and cast
1) check that whether the working of a furnace is good, if furnace lining or stove neck need to repair, then repaired with refractory material, repair flume position and must mend real, smooth, all will toast patched furnace lining, flume;
2) prepare burden: a, mill run are prepared burden---virgin material: foundry returns >=2:3; Converted products is prepared burden---virgin material: foundry returns >=1:1; C, remarks: all enter furnace charge requirement be maintained in the clean condition, substantially carry out non-corroding, without greasy dirt, no-sundries, without sand slag or the globule attachment or phenomenon of making moist; First the virgin material that bundling is good is added time reinforced and dissolves, after add foundry returns;
3) stainless steel melting: a such as 304,316,80% load melting after, add electrolysis ferromanganese 400g pre-deoxidation, then add aluminum strip 200g, slag making removes the gred, and sampling blocking is tested; After b, chemical examination, carry out feed supplement according to lacked element, treat 100% fusing, temperature is at 1550 DEG C-1580 DEG C, reduce EF power to 80KW, add multi-element composite deoxidant 800g and carry out expanding deoxidation, and cover deslagging agent 2-3 minute, terminate to know slag, cover deslagging agent again, slag making deslagging, sample examination, until completely qualified; C, completely qualified after, improve power and be warmed up to about 1600 DEG C, add 400g multi-element composite deoxidant (note: multi-element composite deoxidant is that Si-Ca-Ba aluminium alloy is best), and cover deslagging agent simultaneously, powered-down leaves standstill, foreign material in molten steel are floated, skim 3-4 time rapidly, when survey molten steel temperature is applicable to pouring temperature, insulation tapping completes cast fast, pay special attention to during cast: flume must clean, smooth, without steam, must first dry burned when lifting with parcel;
E, post processing: carry out routine cutting, polishing, heat treatment, pickling, ball blast operation.
Claims (3)
1. prevent a composite casting technology for low-temperature brake valve valve gap neck deformation, it is characterized in that: comprise the following steps:
A, making wax pattern
1) will penetrate wax room indoor temperature controls at 24 ± 3 DEG C, wax rifle is aimed at mould casting hole, opens valve by the slack wax pressure injection of 45 DEG C-48 DEG C in mold cavity, slack wax Pressure Casting is 0.3-0.5MPa, and pressurize 5-10 second, make slack wax be pressed into each corner of die cavity completely, valve-off, remove mould, and mould is put into the frozen water of 1 DEG C-5 DEG C, allow slack wax cool fast in die cavity, cool time is at 5-10 minute, then form removal, takes out wax pattern and puts into frozen water continuation cooling;
2) wax pattern is repaired: adopt special fash and other unnecessary projections of repairing wax spatula removal wax pattern surface or inner chamber, and fill up wax pattern rejected region with rare wax, and wiping is smooth, adapted acetone wiping if desired, after cleaning out and detect qualified after, carry out wax pattern assembling;
3) wax pattern group tree: during group tree, between wax-pattern, minimal gaps must control at more than 15MM, wax-pattern ingate is wanted tightly with weld between wax-pattern, must not have spine and gap;
B, manufacture shell
1) temperature of surface layer room is controlled at≤65 DEG C, first add Ludox during configuration surface layer, more progressively add JFC wetting agent, the quality of JFC wetting agent accounts for the 0.3%-0.5% of gross mass, JFC wetting agent mixes with zirconium powder and stirs, and finally adds and accounts for the defoamer that gross mass is 0.15%-2%;
2) the whole virgin material of surface layer should stir more than 24 hours, measure surface layer viscosity every day, measure with domestic No. 4 cups when measuring viscosity, should control in regulation range of viscosities, Ludox surface layer > drying time 8 hours, the working space temperature of transition zone and backing layer remains on≤50 DEG C, drying time > 12 hours;
3) whether dried necessarily see when being stained with transition zone, and must preimpregnation be carried out, make shell be not easy layering, and degree of being stained with must ensure at 20 ± 2 seconds;
4) when being stained with more than three layers, must adjust viscosity, degree of being stained with must ensure at 13 ± 2 seconds;
5) be stained with more than five layers and use waterglass coating, proportioning is allocated in the ratio of powder liquid quality 1:1, and degree of being stained with must ensure at 30 ± 2 seconds, and hardening bath aluminium chloride density is 1.8-1.2, and firm time is 1 hours, and more than seven layers must extend firm time;
6) make shell: must be scraped off by unnecessary slurries with iron wire or peg wood after valve gap neck and top screws lead to the hole site are stained with slurry, prevent blocking; Simultaneously, in order to strengthen investment shell intensity in shell processed, carry out systematicness when being stained with layer 5 clockwise with No. six iron wire cisoid shells and be wound around reinforcing, then preimpregnation, be stained with slurry, be stained with sand, drying and follow-up dewaxing, with iron wire or peg wood, unnecessary slurries must be scraped off after being stained with slurry, prevent from betting contest and carry out systematicness clockwise with No. six iron wire cisoid shells being wound around that to reinforce operation be all different with other part process for making shell, be prevent low-temperature brake valve lid neck deformation meet twice critical process in casting technique;
C, Baking
1), clean out shell and water peristoma, be strictly on guard against that the foreign material such as sand are fallen in shell; 2), be carefully inverted downwards by shell cup, load in roaster, by technological requirement setting sintering temperature, during temperature to 600 DEG C, close fire door, roasting shell is in white or rose look; E, roasting will coordinate with melting, and when guaranteeing cast, shell reaches the requirement temperature of cast 1050 DEG C-1100 DEG C, temperature retention time >=1.5 hour;
D, melting and cast
1) prepare burden: a, mill run are prepared burden---virgin material: foundry returns >=2:3; Converted products is prepared burden---virgin material: foundry returns >=1:1; C, remarks: all enter furnace charge requirement be maintained in the clean condition, substantially carry out non-corroding, without greasy dirt, no-sundries, without sand slag or the globule attachment or phenomenon of making moist; First the virgin material that bundling is good is added time reinforced and dissolves, after add foundry returns;
2) stainless steel melting: a such as 304,316,80% load melting after, add electrolysis ferromanganese 400g pre-deoxidation, then add aluminum strip 200g, slag making removes the gred, and sampling blocking is tested; After b, chemical examination, carry out feed supplement according to lacked element, treat 100% fusing, temperature is at 1550 DEG C-1580 DEG C, reduce EF power to 80KW, add multi-element composite deoxidant 800g and carry out expanding deoxidation, and cover deslagging agent 2-3 minute, terminate to know slag, cover deslagging agent again, slag making deslagging, sample examination, until completely qualified; C, completely qualified after, improve power and be warmed up to about 1600 DEG C, add 400g multi-element composite deoxidant, and cover deslagging agent simultaneously, powered-down leaves standstill, foreign material in molten steel are floated, skim 3-4 time rapidly, when survey molten steel temperature is applicable to pouring temperature, insulation tapping completes cast fast, pay special attention to during cast: flume must clean, smooth, without steam, must first dry burned when lifting with parcel;
E, post processing: carry out routine cutting, polishing, heat treatment, pickling, ball blast operation.
2. the composite casting technology preventing low-temperature brake valve valve gap neck deformation according to claim 1, is characterized in that: in step C, and whether normally first check roaster and control instrument before roasting, whether table is totally smooth, and whether flue is smooth and easy; Detect whether shell is perfect falls into, defective shell must be repaired complete, aplasticly scraps process.
3. the composite casting technology preventing low-temperature brake valve valve gap neck deformation according to claim 1, it is characterized in that: before carrying out step D, first check that whether the working of a furnace is good, if furnace lining or stove neck need to repair, then repaired with refractory material, repairing flume position must mend real, smooth, all will toast patched furnace lining, flume.
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| CN201510016475.4A CN104550733B (en) | 2015-01-14 | 2015-01-14 | Prevent the composite casting technology of low-temperature brake valve valve gap neck deformation |
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|---|---|---|---|
| CN201510016475.4A CN104550733B (en) | 2015-01-14 | 2015-01-14 | Prevent the composite casting technology of low-temperature brake valve valve gap neck deformation |
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| CN104550733B CN104550733B (en) | 2016-09-07 |
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| CN107377877A (en) * | 2017-07-10 | 2017-11-24 | 盐城市诚益通机械制造有限责任公司 | A kind of two-way valve body formwork is stained with slurry manufacturing process |
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| CN111250660A (en) * | 2020-03-11 | 2020-06-09 | 石家庄宏昌泵业有限公司 | Process for improving surface quality of casting |
| CN114736527A (en) * | 2022-04-13 | 2022-07-12 | 广东栎烽新材料有限公司 | Ornament casting wax, and preparation method and application thereof |
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| CN1550272A (en) * | 2003-02-25 | 2004-12-01 | ��÷���о���˾ | Fugitive pattern material for casting |
| CN101623747A (en) * | 2009-08-10 | 2010-01-13 | 温州市展诚阀门有限公司 | Direct investment casting forming technology of valve small-diameter trapezoidal internal thread |
| CN102069144A (en) * | 2011-01-10 | 2011-05-25 | 安徽应流集团霍山铸造有限公司 | Shell mold casting process for wax mold precision casting stainless steel big part |
| CN202451866U (en) * | 2012-01-13 | 2012-09-26 | 凯泰阀门(集团)有限公司 | Improved soft sealing gate valve |
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2015
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| CN1550272A (en) * | 2003-02-25 | 2004-12-01 | ��÷���о���˾ | Fugitive pattern material for casting |
| CN101623747A (en) * | 2009-08-10 | 2010-01-13 | 温州市展诚阀门有限公司 | Direct investment casting forming technology of valve small-diameter trapezoidal internal thread |
| CN102069144A (en) * | 2011-01-10 | 2011-05-25 | 安徽应流集团霍山铸造有限公司 | Shell mold casting process for wax mold precision casting stainless steel big part |
| CN202451866U (en) * | 2012-01-13 | 2012-09-26 | 凯泰阀门(集团)有限公司 | Improved soft sealing gate valve |
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| CN105618678A (en) * | 2015-12-29 | 2016-06-01 | 青岛博泰美联化工技术有限公司 | Preparation method for environment-friendly refined casting mold shell |
| CN107377877A (en) * | 2017-07-10 | 2017-11-24 | 盐城市诚益通机械制造有限责任公司 | A kind of two-way valve body formwork is stained with slurry manufacturing process |
| CN107838378A (en) * | 2017-11-24 | 2018-03-27 | 江苏华立控制阀有限公司 | A kind of shell melting casting process processed applied to control valve |
| CN110306100A (en) * | 2018-03-25 | 2019-10-08 | 江苏万恒铸业有限公司 | The method of-kind of optimization CN7M stainless cast steel part performance |
| CN108421954A (en) * | 2018-06-08 | 2018-08-21 | 泰州市博世特精密铸造有限公司 | Production method applied to valve wax-pattern |
| CN108705037A (en) * | 2018-06-08 | 2018-10-26 | 泰州市博世特精密铸造有限公司 | Casting method applied to automobile gear case lid |
| CN109604521A (en) * | 2018-11-23 | 2019-04-12 | 安徽应流铸业有限公司 | A kind of preparation method that the compound shell mold of essence casting is reinforced |
| CN109773122A (en) * | 2019-02-19 | 2019-05-21 | 大成（常熟）机械有限公司 | A kind of production technology and valve castings of the model casting of valve castings |
| CN111112549A (en) * | 2019-02-19 | 2020-05-08 | 大成（常熟）机械有限公司 | Precision casting production process of flow divider and flow divider |
| CN110576149A (en) * | 2019-10-18 | 2019-12-17 | 彰武县联信铸造硅砂有限公司 | Layered curing composite molding process for precoated sand |
| CN111250660A (en) * | 2020-03-11 | 2020-06-09 | 石家庄宏昌泵业有限公司 | Process for improving surface quality of casting |
| CN114736527A (en) * | 2022-04-13 | 2022-07-12 | 广东栎烽新材料有限公司 | Ornament casting wax, and preparation method and application thereof |
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Inventor after: Zhou Sunliang Inventor after: Zhou Lin Inventor after: Wei Daming Inventor after: Jin Shuangquan Inventor after: Wang Jianju Inventor before: Zhou Sunliang Inventor before: Wei Daming Inventor before: Jin Shuangquan Inventor before: Wang Jianju |
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Denomination of invention: Composite casting technology capable of preventing neck part of valve cap of low-temperature brake valve from being deformed Effective date of registration: 20191227 Granted publication date: 20160907 Pledgee: Industrial Bank Co., Ltd. Wenzhou Branch Pledgor: Wenzhou Chang Chang Valve Co., Ltd. Registration number: Y2019330000403 |
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