CN101876607A - Casting production process of ultrasonic test block - Google Patents
Casting production process of ultrasonic test block Download PDFInfo
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- CN101876607A CN101876607A CN 201010227747 CN201010227747A CN101876607A CN 101876607 A CN101876607 A CN 101876607A CN 201010227747 CN201010227747 CN 201010227747 CN 201010227747 A CN201010227747 A CN 201010227747A CN 101876607 A CN101876607 A CN 101876607A
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Abstract
The invention relates to a casting production process of an ultrasonic test block, which comprises the following steps: firstly, manufacturing a metal mold, and then, carrying out sand core operation, i.e. firstly, manufacturing each sand core split by using sand in a sand core mold box, wherein the sand core comprises quartz sand, quartz powder and fire clay; arranging cold iron in the position of on each sand core split corresponding to the thermal center of a cast; arranging a stepped pouring channel on the surface of each sand core split; bonding each sand core split to obtain the required sand core; assembling the sand core and the metal mold; carrying out casting operation, wherein the casting temperature is 1340-1380 DEG C, and the casting time is 30-50 seconds; insulating for 50-80 minutes to obtain the product, wherein the product yield is 50%-70%;and cooling and molding, and then, opening the mold to obtain the required ultrasonic test block. The invention is suitable for manufacturing metallic ultrasonic test blocks and has the advantages of higher casting quality, fine manufacturing process and better cast molding effect.
Description
Technical field
The present invention relates to a kind of production method of test block, relate in particular to a kind of casting production process of ultrasonic test block, specifically be applicable to the monoblock cast of metal material ultrasonic test block.
Background technology
The effect of ultrasonic test block is to cooperate supersonic reflectoscope that workpiece is surveyed.Because the change of some external factor can have influence on the sensitivity of detection in the detection process, so needing to use at regular intervals ultrasonic test block in detection process checks, to guarantee the constant of detection sensitivity, the importance of ultrasonic test block has some idea of, equally, this has also proposed high request to the manufacturing of ultrasonic test block.
The Chinese patent Granted publication number is CN100367022C, Granted publication day is that the patent of invention on February 6th, 2008 discloses a kind of intelligent concrete test block and making thereof, application, carbon fiber in the test block batch, fine powder admixture and coarse aggregate are adopted secondary three times in this invention or two dried one wet stirrings are made and use capacitance to make the technical scheme of electric performance test parameter, both overcome the defective that the test block electric conductivity descends, and solved the difficult problem that carbon fiber can't disperse again but also more managed and to use unsettled resistivity to make the method for monitoring.The test block of making was responsive to the compressive stress reaction, piezoelectric property is stable, repeatability is strong though should invent, detection applicable to building structure stress, but the making that it is adapted to concrete test block does not fit into the making of metal coupons, and its manufacture craft is coarse, castability is not high.
Summary of the invention
The objective of the invention is to overcome not fitting into of existing in the prior art and make metal coupons, manufacture craft is coarse, castability is not high defective and problem, a kind of casting production process that is adapted to make metal coupons, manufacture craft is meticulous, castability is higher ultrasonic test block is provided.
For realizing above purpose, technical solution of the present invention is: a kind of casting production process of ultrasonic test block, this production technology comprise Mold Making, core making, core operation down, pouring operation and die sinking operation successively;
Described core operation is meant: make each core with sand earlier in the core mold box and divide core, and divide at each core that corresponding casting heat energy-saving position is provided with chill on the core, each core divides the core face of core to be provided with the staged running channel then, divides core bonding each core again, promptly gets required core after bonding;
The operation of described core down is meant: core and metal die are assembled, and the casting liquid introducing port of metal die communicates with the road junction of watering of core, and is coated with exotic material on the core face;
Described pouring operation is meant: earlier unitary mould is toasted, will cast liquid after the baking again and inject die cavity, pouring temperature is 1340-1380 ℃, be 30-50 second the duration of pouring, be incubated operation then, temperature retention time is 50-80 minute, and the product recovery rate is 50%-70%;
Described pouring temperature is 1360 ℃, and be 35-45 second the duration of pouring, is incubated operation then, and temperature retention time is 60 minutes, and the product recovery rate is 65%.
The composition of described core is silica sand, silica flour and fire clay.
Described silica sand, silica flour and fire clay mass percent separately is: silica sand 20-30%, silica flour 30-40%, fire clay 30-50%.
Described silica sand, silica flour and fire clay mass percent separately is: silica sand 25%, silica flour 35%, fire clay 40%.
Compared with prior art, beneficial effect of the present invention is:
1, since in the casting production process of a kind of ultrasonic test block of the present invention at the special substance requirement of ultrasonic test block, designed corresponding pouring operation, the pouring temperature and the duration of pouring have not only been emphasized, be that pouring temperature is 1340-1380 ℃, be 30-50 second the duration of pouring, also carried out insulation operation after cast, and what previous designs not only can guarantee to pour into a mould at the uniform velocity carries out, and can guarantee the at the uniform velocity cooling of foundry goods, thereby obtain the foundry goods of better quality.Therefore the present invention not only is adapted to make metal coupons, and manufacture craft is meticulous, castability is higher.
2, since in the casting production process of a kind of ultrasonic test block of the present invention at the specific use and the casting requirement of ultrasonic test block, in the core operation, at first choose silica sand, silica flour and fire clay are as manufacturing materials, and designed unique ratio, thereby guarantee the even and strong retractility of internal density of core, then at the construction features of ultrasonic test block, designed the coremaking mode of dividing the core combination, and designed the staged gate, can guarantee the at the uniform velocity moulding of foundry goods in die cavity, guarantee foundry goods external form symmetry, meet the requirements, further improve casting quality.Therefore manufacture craft of the present invention is meticulous, the foundry goods molding effect is better.
Embodiment
The present invention is further detailed explanation below in conjunction with embodiment
A kind of casting production process of ultrasonic test block, this production technology comprise Mold Making, core making, core operation down, pouring operation and die sinking operation successively;
Special feature of the present invention is:
The core operation is meant: make each core with sand earlier in the core mold box and divide core, and divide at each core that corresponding casting heat energy-saving position is provided with chill on the core, each core divides the core face of core to be provided with the staged running channel then, divides core bonding each core again, promptly gets required core after bonding; The composition of preferred core is silica sand, silica flour and fire clay, and its mass percent separately is: silica sand 20-30%, silica flour 30-40%, fire clay 30-50%, further preferred silica sand 25%, silica flour 35%, fire clay 40%.
Preferred core operation down is meant: core and metal die are assembled, and the casting liquid introducing port of metal die communicates with the road junction of watering of core, and is coated with exotic material on the core face;
Preferred pouring operation is meant: earlier unitary mould is toasted, to cast liquid after the baking again and inject die cavity, pouring temperature is 1340-1380 ℃, and be 30-50 second the duration of pouring, be incubated operation then, temperature retention time is 50-80 minute, and the product recovery rate is 50%-70%, and further preferred pouring temperature is 1360 ℃, be 35-45 second the duration of pouring, be incubated operation then, temperature retention time is 60 minutes, and the product recovery rate is 65%.
Embodiment 1:
A kind of casting production process of ultrasonic test block, this production technology comprise Mold Making, core making, core operation down, pouring operation and die sinking operation successively;
Described core operation is meant: make each core with sand earlier in the core mold box and divide core, the composition of core is a silica sand 25%, silica flour 35%, fire clay 40%, and divide at each core that corresponding casting heat energy-saving position is provided with chill on the core, each core divides the core face of core to be provided with the staged running channel then, divides core bonding each core again, promptly gets required core after bonding;
The operation of described core down is meant: core and metal die are assembled, and the casting liquid introducing port of metal die communicates with the road junction of watering of core, and is coated with exotic material on the core face;
Described pouring operation is meant: earlier unitary mould is toasted, will cast liquid after the baking again and inject die cavity, pouring temperature is 1360 ℃, and be 40 seconds the duration of pouring, is incubated operation then, and temperature retention time is 60 minutes, and the product recovery rate is 65%.
Therefore the present invention not only is adapted to make the metal ultrasonic test block, castability is higher, and manufacture craft is meticulous, the foundry goods molding effect is better.
The above only is a better embodiment of the present invention; protection scope of the present invention is not exceeded with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (5)
1. the casting production process of a ultrasonic test block, this production technology comprise successively that Mold Making, core are made, core operation down, pouring operation and die sinking operation, it is characterized in that:
Described core operation is meant: make each core with sand earlier in the core mold box and divide core, and divide at each core that corresponding casting heat energy-saving position is provided with chill on the core, each core divides the core face of core to be provided with the staged running channel then, divides core bonding each core again, promptly gets required core after bonding;
The operation of described core down is meant: core and metal die are assembled, and the casting liquid introducing port of metal die communicates with the road junction of watering of core, and is coated with exotic material on the core face;
Described pouring operation is meant: earlier unitary mould is toasted, will cast liquid after the baking again and inject die cavity, pouring temperature is 1340-1380 ℃, be 30-50 second the duration of pouring, be incubated operation then, temperature retention time is 50-80 minute, and the product recovery rate is 50%-70%.
2. the casting production process of a kind of ultrasonic test block according to claim 1, it is characterized in that: described pouring temperature is 1360 ℃, and be 35-45 second the duration of pouring, is incubated operation then, and temperature retention time is 60 minutes, and the product recovery rate is 65%.
3. the casting production process of a kind of ultrasonic test block according to claim 1 and 2, it is characterized in that: the composition of described core is silica sand, silica flour and fire clay.
4. the casting production process of a kind of ultrasonic test block according to claim 3, it is characterized in that: described silica sand, silica flour and fire clay mass percent separately is: silica sand 20-30%, silica flour 30-40%, fire clay 30-50%.
5. the casting production process of a kind of ultrasonic test block according to claim 4, it is characterized in that: described silica sand, silica flour and fire clay mass percent separately is: silica sand 25%, silica flour 35%, fire clay 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102277472A CN101876607B (en) | 2010-07-16 | 2010-07-16 | Casting production process of ultrasonic test block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102277472A CN101876607B (en) | 2010-07-16 | 2010-07-16 | Casting production process of ultrasonic test block |
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| CN101876607A true CN101876607A (en) | 2010-11-03 |
| CN101876607B CN101876607B (en) | 2011-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918688A (en) * | 2018-06-11 | 2018-11-30 | 浙江方圆金属材料检测有限公司 | A kind of ultrasound detection metal structure test block and its preparation process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006162331A (en) * | 2004-12-03 | 2006-06-22 | Nissan Motor Co Ltd | Core crease test method for casting molding |
| CN1923406A (en) * | 2006-09-18 | 2007-03-07 | 苏州工业园区明志铸造装备有限公司 | Cold core |
-
2010
- 2010-07-16 CN CN2010102277472A patent/CN101876607B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006162331A (en) * | 2004-12-03 | 2006-06-22 | Nissan Motor Co Ltd | Core crease test method for casting molding |
| CN1923406A (en) * | 2006-09-18 | 2007-03-07 | 苏州工业园区明志铸造装备有限公司 | Cold core |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918688A (en) * | 2018-06-11 | 2018-11-30 | 浙江方圆金属材料检测有限公司 | A kind of ultrasound detection metal structure test block and its preparation process |
| CN108918688B (en) * | 2018-06-11 | 2021-03-02 | 浙江方圆金属材料检测有限公司 | Metal structure test block for ultrasonic detection and preparation process thereof |
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| Publication number | Publication date |
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| CN101876607B (en) | 2011-12-21 |
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