CN105312502B - A kind of preparation method of heat-resistance stainless steel - Google Patents
A kind of preparation method of heat-resistance stainless steel Download PDFInfo
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- CN105312502B CN105312502B CN201510738942.4A CN201510738942A CN105312502B CN 105312502 B CN105312502 B CN 105312502B CN 201510738942 A CN201510738942 A CN 201510738942A CN 105312502 B CN105312502 B CN 105312502B
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Abstract
The invention discloses a kind of preparation method of heat-resistance stainless steel, comprise the following steps：Shell processed：It is including lower casing processed and upper casing processed, cold core sand, binding agent and curing agent is mixing cured；Inner core processed：Including runner core processed and the supporting core of system；Coat：Zirconium oxide coating is applied on shell, water based paint is applied on inner core；Shell and inner core drying；Lower core：By runner core and supporting core tripping in lower casing；Mould assembly：Upper casing is closed on lower casing after lower core, then places and is toasted after sprue cup, mould assembly；Smelting and pouring；Peeling, Shake-out Time 30 minutes.The problem of present invention solves low hot core shell mould production heat-resistance stainless steel casting efficiency and big labor intensity, while solving the problem of hot core shell mould production heat resisting steel casting quality is unstable, reduces production cost.
Description
Technical field
The present invention relates to Casting Technology field, especially a kind of preparation method of heat-resistance stainless steel.
Background technology
At present, the main casting method of domestic heat-resisting steel casting has device for sand coated iron mould casting, shell casting and model casting,
Wherein shell casting is the main method for producing the heat-resisting steel casting of complex thin-wall, and the outer shape of casting is formed by upper lower casing mould,
Interior shape is formed by core, and upper lower casing mould and core are all hot cores, by inner core tripping in lower casing mould, then goes up lower casing mould mould assembling,
Then cast is compressed, this technique productions heat resisting steel casting quality is unstable, the making hot core efficiency of shell is low, labor intensity is big,
Worker laboring environment is poor.
The content of the invention
The present invention in view of the shortcomings of the prior art, proposes a kind of preparation method of heat-resistance stainless steel, solves hot core shell mould
The problem of producing low heat-resistance stainless steel casting efficiency and big labor intensity, while solving hot core shell mould produces heat-resisting steel casting matter
The problem of measuring unstable, reduces production cost.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
A kind of preparation method of heat-resistance stainless steel, comprises the following steps：
（1）Shell processed：It is including lower casing processed and upper casing processed, cold core sand, binding agent and curing agent is mixing cured；
（2）Inner core processed：Including runner core processed and the supporting core of system；
（3）Coat：Zirconium oxide coating is applied on shell, water based paint is applied on inner core；
（4）Shell and inner core drying；
（5）Lower core：By runner core and supporting core tripping in lower casing；
（6）Mould assembly：Upper casing is closed on lower casing after lower core, then places and is toasted after sprue cup, mould assembly；
（7）Smelting and pouring；
（9）Peeling, Shake-out Time 30 minutes.
Further, the step（1）Described in binding agent include phenolic resin and PIC, the two proportioning be one
Than one.
Further, the step（1）Described in curing agent be triethylamine.
Further, it is 1.6% that the binding agent, which accounts for material rate, and it is 3% that curing agent, which accounts for material rate,.
Further, the step（1）Hardening time is 6 to 10 seconds.
Further, the step（2）Middle hardening time is 150 to 160 seconds, and solidification temperature is 220 degrees Celsius to 240 and taken the photograph
Family name's degree.
Further, the step（3）In on shell apply zirconium oxide coating when Baume degrees be 70 to 72, on inner core apply
Baume degrees is 34-36 during water based paint.
Further, the step（4）In, shell drying time is 60 minutes, and inner core drying is 40 minutes.
Further, the step（7）In, 1700 DEG C of fusion temperature, 1600 DEG C of pouring temperature.
A kind of preparation method of heat-resistance stainless steel of the present invention, improves production efficiency, using hot core shell mold technique per hour
20 casees products are produced, 60 casees products are produced using cold core shell mold technique per hour, production efficiency improves 3 times；Reduce raw material
Cost, hot core precoated sand cost is 4 times of cold core roughing sand cost, and heating core needs to consume substantial amounts of electric energy heating, and cold core mould
Tool need not be heated；Solve quality instability problem, the quality of hot core shell mould production heat-resistance stainless steel casting largely by
Human factor influence coremaking, core finishing, is coated, is likely to influence the matter of casting in lower core, mould assembly, transport process than larger
Amount, and my company uses mechanized operation using cold core shell mold technique whole process, it is ensured that the stability of production process.
Embodiment
A kind of preparation method of heat-resistance stainless steel, comprises the following steps：
（1）Shell processed：It is including lower casing processed and upper casing processed, cold core sand, binding agent and curing agent is mixing cured；
（2）Inner core processed：Including runner core processed and the supporting core of system；
（3）Coat：Zirconium oxide coating is applied on shell, water based paint is applied on inner core；
（4）Shell and inner core drying；
（5）Lower core：By runner core and supporting core tripping in lower casing, the lower zirconia filters of Φ 60；
（6）Mould assembly：Upper casing is closed on lower casing after lower core, then places and is toasted after sprue cup, mould assembly, baking time 60
Minute；
（7）Smelting and pouring；
（9）Peeling, Shake-out Time 30 minutes.
The step（1）Described in binding agent include phenolic resin and PIC, the two proportioning be one to one.
The step（1）Described in curing agent be triethylamine.
It is 1.6% that the binding agent, which accounts for material rate, and it is 3% that curing agent, which accounts for material rate,.
The step（1）Hardening time is 6 to 10 seconds.
The step（2）Middle hardening time is 150 to 160 seconds, and solidification temperature is 220 degrees Celsius to 240 degrees Celsius.
The step（3）In on shell apply zirconium oxide coating when Baume degrees be 70 to 72, water based paint is applied on inner core
When Baume degrees be 34-36.
The step（4）In, shell drying time is 60 minutes, and inner core drying is 40 minutes.
The step（7）In, 1700 DEG C of fusion temperature, 1600 DEG C of pouring temperature.
A kind of preparation method of heat-resistance stainless steel of the present invention, improves production efficiency, using hot core shell mold technique per hour
20 casees products are produced, 60 casees products are produced using cold core shell mold technique per hour, production efficiency improves 3 times；Reduce raw material
Cost, hot core precoated sand cost is 4 times of cold core roughing sand cost, and heating core needs to consume substantial amounts of electric energy heating, and cold core mould
Tool need not be heated；Solve quality instability problem, the quality of hot core shell mould production heat-resistance stainless steel casting largely by
Human factor influence coremaking, core finishing, is coated, is likely to influence the matter of casting in lower core, mould assembly, transport process than larger
Amount, and my company uses mechanized operation using cold core shell mold technique whole process, it is ensured that the stability of production process.
Claims (3)
1. a kind of preparation method of heat-resistance stainless steel, it is characterised in that comprise the following steps：
（1）Shell processed：It is including lower casing processed and upper casing processed, cold core sand, binding agent and curing agent is mixing cured；
（2）Inner core processed：Including runner core processed and the supporting core of system；
（3）Coat：Zirconium oxide coating is applied on shell, water based paint is applied on inner core；
（4）Shell and inner core drying；
（5）Lower core：By runner core and supporting core tripping in lower casing；
（6）Mould assembly：Upper casing is closed on lower casing after lower core, then places and is toasted after sprue cup, mould assembly；
（7）Smelting and pouring；
（9）Peeling, Shake-out Time 30 minutes；
The step（1）Described in binding agent include phenolic resin and PIC, the two proportioning be one to one；
The step（1）Described in curing agent be triethylamine；
It is 1.6% that the binding agent, which accounts for material rate, and it is 3% that curing agent, which accounts for material rate,；
The step（1）Hardening time is 6 to 10 seconds；
The step（2）Middle hardening time is 150 to 160 seconds, and solidification temperature is 220 degrees Celsius to 240 degrees Celsius；
The step（3）In on shell apply zirconium oxide coating when Baume degrees be 70 to 72, on inner core apply water based paint when ripple
U.S. degree is 34-36.
2. a kind of preparation method of heat-resistance stainless steel as claimed in claim 1, it is characterised in that the step（4）In, shell dries
The dry time is 60 minutes, and inner core drying is 40 minutes.
3. a kind of preparation method of heat-resistance stainless steel as claimed in claim 1, it is characterised in that the step（7）In, fusing temperature
1700 DEG C of degree, 1600 DEG C of pouring temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510738942.4A CN105312502B (en) | 2015-11-04 | 2015-11-04 | A kind of preparation method of heat-resistance stainless steel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510738942.4A CN105312502B (en) | 2015-11-04 | 2015-11-04 | A kind of preparation method of heat-resistance stainless steel |
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| CN105312502A CN105312502A (en) | 2016-02-10 |
| CN105312502B true CN105312502B (en) | 2017-09-15 |
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| CN201510738942.4A Active CN105312502B (en) | 2015-11-04 | 2015-11-04 | A kind of preparation method of heat-resistance stainless steel |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108044035A (en) * | 2017-12-01 | 2018-05-18 | 东方电气集团东方汽轮机有限公司 | A kind of hot investment casting Split type ceramic formwork assembling forming process |
| CN111842797A (en) * | 2019-04-29 | 2020-10-30 | 科华控股股份有限公司 | Automatic flame heating device for sand mold pouring gate of cold core box molding line |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1036322C (en) * | 1993-03-24 | 1997-11-05 | 化学工业部湘东化工机械厂 | Centrifugal casting method and mould for round heat-resistant high alloy steel parts |
| FR2775915B1 (en) * | 1998-03-10 | 2000-06-02 | Fonderie Ctr Tech Ind | COATING FOR NON-RECARBURETY MOLDING OF LOW-CARBON STAINLESS STEEL PARTS |
| CN101288897A (en) * | 2008-04-29 | 2008-10-22 | 即墨市海隆机械有限公司 | Production method of water based paint special for lost foam |
| CN101362184B (en) * | 2008-09-08 | 2012-06-06 | 莱芜市泰钢新材料有限责任公司 | Manufacture method of stainless steel, carbon steel precision casting surface shell |
| CN102717032B (en) * | 2012-07-09 | 2014-01-15 | 江苏多为泵业股份有限公司 | Precision casting method for automobile turbocharger casing part |
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