CN104759589A - Mold making technique for high-nickel austenite nodular cast iron - Google Patents
Mold making technique for high-nickel austenite nodular cast iron Download PDFInfo
- Publication number
- CN104759589A CN104759589A CN201510144950.6A CN201510144950A CN104759589A CN 104759589 A CN104759589 A CN 104759589A CN 201510144950 A CN201510144950 A CN 201510144950A CN 104759589 A CN104759589 A CN 104759589A
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- CN
- China
- Prior art keywords
- bead
- cast iron
- bonding
- nodular cast
- slaking
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- 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.)
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Classifications
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- 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
Abstract
The invention discloses a mold making technique for high-nickel austenite nodular cast iron, which comprises the following steps: (1) prefoaming; (2) curing; (3) mold piece forming; (4) film bonding; and (5) painting and drying. The preparation technique is simple to operate. The produced mold has favorable air permeability. The produced casting is convenient for subsequent cleaning and high in yield.
Description
Technical field
The present invention relates to the mould making process for high-nickel austenite nodular cast iron.
Background technology
High-nickel austenite nodular cast iron intensity is high, high temperature resistant, corrosion-resistant, creep resistant, motor exhaust 1000 DEG C of ungauged regions, indeformable can be born, continuous operation 500 hours is unchanged, it is the ideal material of the volute manufacturing turbocharger for gasoline engine, but nickelic material iron liquid poor fluidity, the gas permeability of model directly affects the casting of high-nickel austenite nodular cast iron; The existing mould making process for high-nickel austenite nodular cast iron is immature, and follow-up cleaning is large; Existing complex operation, percent defective is high.
Summary of the invention
In order to overcome above deficiency, the invention provides the mould making process for high-nickel austenite nodular cast iron, simple to operate, the mould good permeability produced, the follow-up easy to clean of the foundry goods produced, yield rate are high.
Object of the present invention is achieved through the following technical solutions: for the mould making process of high-nickel austenite nodular cast iron, and the described mould making process for high-nickel austenite nodular cast iron includes following steps:
(1) prefoam: select diameter be the expandability STMMA copolymerization of ethylene of 0.25-0.35mm as bead, by pre-foaming machine by bead prefoam;
(2) slaking: the bead after prefoam being completed goes to slaking storehouse, delivers to the induction system of bead dolly after bead slaking;
(3) matrix is shaping: the bead after slaking is transported in moulding machine by induction system, and single mode sheet aging time is 6h;
(4) diaphragm bonding: adopt semi-automatic evaporative pattern matrix cold bonding to pick and carry out model bonding, model bonding adopts cold glue bonding, places 24h, make combination die bundle after bonding;
(5) coating, oven dry: select manipulator to combination die Shu Jinhang dip-coating material, then dry, drying time is 7.5-8.5h, carries out secondary dip-coating material, then carry out secondary drying after oven dry, and drying time is 7.5-8.5h.
Wherein need in step (5) operating process to check matrix, moulded dimension and coating property.
Wherein in step (5), after secondary dip-coating material, coating reaches 7.8-8.2mm at the surface evenness of combination die bundle.
This manufacture craft compared with prior art has the following advantages:
The present invention adopt select diameter be the expandability STMMA copolymerization of ethylene of 0.25-0.35mm as bead, the mould good permeability produced, interior exocoel reaches physical dimension, and the quality of the mould made is high; This technique is lost foam process, simple to operate, and the follow-up easy to clean of the foundry goods utilizing this mould to produce, yield rate are high; In operating process, matrix, moulded dimension and coating property are checked, effectively improve the yield rate of mould.
detailed description of the invention:
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment 1
The invention provides the mould making process for high-nickel austenite nodular cast iron, the described mould making process for high-nickel austenite nodular cast iron includes following steps:
(1) prefoam: select diameter be the expandability STMMA copolymerization of ethylene of 0.25-0.35mm as bead, by pre-foaming machine by bead prefoam;
(2) slaking: the bead after prefoam being completed goes to slaking storehouse, delivers to the induction system of bead dolly after bead slaking;
(3) matrix is shaping: the bead after slaking is transported in moulding machine by induction system, and single mode sheet aging time is 6h;
(4) diaphragm bonding: adopt semi-automatic evaporative pattern matrix cold bonding to pick and carry out model bonding, model bonding adopts cold glue bonding, places 24h, make combination die bundle after bonding;
(5) coating, oven dry: select manipulator to combination die Shu Jinhang dip-coating material, then dry, drying time is 7.5-8.5h, carries out secondary dip-coating material, then carry out secondary drying after oven dry, and drying time is 7.5-8.5h.
Wherein need in step (5) operating process to check matrix, moulded dimension and coating property.
Wherein in step (5), after secondary dip-coating material, coating reaches 7.8-8.2mm at the surface evenness of combination die bundle.
Embodiment 2
The invention provides the mould making process for high-nickel austenite nodular cast iron, the described mould making process for high-nickel austenite nodular cast iron includes following steps:
(1) prefoam: select diameter be the expandability STMMA copolymerization of ethylene of 0.3mm as bead, by pre-foaming machine by bead prefoam;
(2) slaking: the bead after prefoam being completed goes to slaking storehouse, delivers to the induction system of bead dolly after bead slaking;
(3) matrix is shaping: the bead after slaking is transported in moulding machine by induction system, and single mode sheet aging time is 6h;
(4) diaphragm bonding: adopt semi-automatic evaporative pattern matrix cold bonding to pick and carry out model bonding, model bonding adopts cold glue bonding, places 24h, make combination die bundle after bonding;
(5) coating, oven dry: select manipulator to combination die Shu Jinhang dip-coating material, then dry, drying time is 8h, carries out secondary dip-coating material, then carry out secondary drying after oven dry, and drying time is 8h.
Wherein need in step (5) operating process to check matrix, moulded dimension and coating property.
Wherein in step (5), after secondary dip-coating material, coating reaches 8mm at the surface evenness of combination die bundle.
Provide the description to embodiment above, can use to make any technical staff in this area or utilize the present invention.The various amendments of these embodiments are evident for personnel skilled in the art, total principle described here can be applied to other embodiments and use creativeness.Thus, the embodiment shown in the present invention will be not limited to here, and should according to the most wide region meeting disclosed principle and new feature here.
Claims (3)
1. for a mould making process for high-nickel austenite nodular cast iron, it is characterized in that: the described mould making process for high-nickel austenite nodular cast iron includes following steps:
(1) prefoam: select diameter be the expandability STMMA copolymerization of ethylene of 0.25-0.35mm as bead, by pre-foaming machine by bead prefoam;
(2) slaking: the bead after prefoam being completed goes to slaking storehouse, delivers to the induction system of bead dolly after bead slaking;
(3) matrix is shaping: the bead after slaking is transported in moulding machine by induction system, and single mode sheet aging time is 6h;
(4) diaphragm bonding: adopt semi-automatic evaporative pattern matrix cold bonding to pick and carry out model bonding, model bonding adopts cold glue bonding, places 24h, make combination die bundle after bonding;
(5) coating, oven dry: select manipulator to combination die Shu Jinhang dip-coating material, then dry, drying time is 7.5-8.5h, carries out secondary dip-coating material, then carry out secondary drying after oven dry, and drying time is 7.5-8.5h.
2. the mould making process for high-nickel austenite nodular cast iron according to claim 1, is characterized in that: need in described step (5) operating process to check matrix, moulded dimension and coating property.
3. the mould making process for high-nickel austenite nodular cast iron according to claim 1, is characterized in that: in described step (5), after secondary dip-coating material, coating reaches 7.8-8.2mm at the surface evenness of combination die bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144950.6A CN104759589A (en) | 2015-03-31 | 2015-03-31 | Mold making technique for high-nickel austenite nodular cast iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510144950.6A CN104759589A (en) | 2015-03-31 | 2015-03-31 | Mold making technique for high-nickel austenite nodular cast iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104759589A true CN104759589A (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510144950.6A Pending CN104759589A (en) | 2015-03-31 | 2015-03-31 | Mold making technique for high-nickel austenite nodular cast iron |
Country Status (1)
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| CN (1) | CN104759589A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552725A (en) * | 2017-09-21 | 2018-01-09 | 安徽工程大学 | A kind of STMMA large scales cavityless casting sheet material evaporative pattern and preparation method thereof |
| CN112692236A (en) * | 2021-01-27 | 2021-04-23 | 芜湖冠锋模具塑料有限公司 | Template for lost foam forming machine and processing technology thereof |
| CN112936706A (en) * | 2021-01-27 | 2021-06-11 | 芜湖冠锋模具塑料有限公司 | Lost foam plate production process using STMMA material |
-
2015
- 2015-03-31 CN CN201510144950.6A patent/CN104759589A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107552725A (en) * | 2017-09-21 | 2018-01-09 | 安徽工程大学 | A kind of STMMA large scales cavityless casting sheet material evaporative pattern and preparation method thereof |
| CN107552725B (en) * | 2017-09-21 | 2019-07-26 | 安徽工程大学 | A kind of STMMA large scale cavityless casting plate evaporative pattern and preparation method thereof |
| CN112692236A (en) * | 2021-01-27 | 2021-04-23 | 芜湖冠锋模具塑料有限公司 | Template for lost foam forming machine and processing technology thereof |
| CN112936706A (en) * | 2021-01-27 | 2021-06-11 | 芜湖冠锋模具塑料有限公司 | Lost foam plate production process using STMMA material |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150708 |