CN105195676A - Cylindrical casting piece pouring system preventing cracks and design method thereof - Google Patents
Cylindrical casting piece pouring system preventing cracks and design method thereof Download PDFInfo
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- CN105195676A CN105195676A CN201510710480.5A CN201510710480A CN105195676A CN 105195676 A CN105195676 A CN 105195676A CN 201510710480 A CN201510710480 A CN 201510710480A CN 105195676 A CN105195676 A CN 105195676A
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- running channel
- foundry goods
- vertical tube
- gap running
- gap
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Abstract
The invention provides a cylindrical casting piece pouring system preventing cracks and a design method thereof. The system includes a vertical cylinder, a gap runner and a casting piece body; the vertical cylinder is communicated with the rear end of the gap runner, and the front end of the gap runner is communicated with the casting piece body; an included angle of the upper side face of the gap runner with the vertical cylinder is an acute angle; the front end of the gap runner is provided with a repairing patch, and a feeding channel is formed. The gap runner includes a plurality of gap runner sections, and the vertical cylinder is communicated with a mold body through the plurality of the gap runner sections. The acute angle is formed between the gap runner and the vertical cylinder in a connection manner, so that directional stress concentration is caused, and the cracks are guided to be generated between the gap runner and the vertical cylinder, so as to release the casting piece stress and prevent the cracks from being generated in the casting piece body; the front end of the gap runner is provided with the repairing patch, the feeding channel is formed, a hot section moves outward, at the same time, a rounded transition formed by the repairing patch prevents stress concentration, and the cracks are guided indirectly to be generated in a specified part.
Description
Technical field
The present invention relates to the placingJi Shu of foundry goods, particularly, relate to a kind of the tubular casting moulding system and the method for designing thereof that prevent crackle.
Background technology
Tubular foundry goods is a kind of common foundry goods, and such foundry goods is widely used in Aero-Space, boats and ships, automobile and other industrial circles, and along with the development of modern foundry engieering, the tubular casting method of lightweight, high accuracy, high complexity becomes study hotspot.
The generation of crackle is a major defect that class foundry goods easily occurs in process of production, is the main cause of restriction casting qualified rate, and its expanded range is wide, the degree of depth large, and be difficult to repair welding, the generation of crackle is often scrapped along with foundry goods.Cylinder class cast casting adopts vertical tube to add the running gate system of clearance type running channel often, conventional vertical tube adds clearance type running channel running gate system due to vertical tube wall diameter and is greater than a class casting section thickness, and vertical tube temperature field is generally higher than cylinder class foundry goods body, vertical tube solidification sequence is caused to lag behind a phenomenon for class foundry goods body, tension can be produced to completing the cylinder class foundry goods body solidified when this phenomenon can cause vertical tube to be solidified, and tension distribution can be curved, be maximum with the upper and lower two ends of vertical tube, interlude is minimum.When being distributed in many vertical tubes around tubular foundry goods and producing the tension to tubular foundry goods simultaneously, very easily crack at the casting stress place of concentrating.For addressing this problem, the method for the welt that tradition adopts, but large-area welt can only alleviate the tendency that crackle produces, and can not eliminate stress, foundry goods internal stress is not eliminated and easily in following process, is produced new crackle.And the method needs a large amount of facing material, these materials all will be cut in follow-up roughing, comparatively waste material.
For highly higher tubular foundry goods, be ensure casting quality, adopt multi-ladder clearance type running channel, adopt in vertical tube and clearance type running channel junction less or without chamfer design, cause artificial stress to concentrate, guide crackle to occur on vertical tube and gap running channel.When Design of Runner System is reasonable, effectively can discharge casting stress, alleviate foundry goods tearing tendency, prevent crack defect.Simultaneously add suitable facing material and round-corner transition at gap running channel near foundry goods body side, make people be that the crackle that causes is unlikely and extend to foundry goods body.
Therefore the design of running gate system is most important to reduction foundry goods cracking risk.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of the tubular casting moulding system and the method for designing thereof that prevent crackle.
The tubular casting moulding system preventing crackle provided according to an aspect of the present invention, comprises vertical tube, gap running channel and foundry goods body;
Wherein, described vertical tube is communicated with the rear end of described gap running channel, and the front end of described gap running channel is communicated with described foundry goods body; Between the upper side of described gap running channel and vertical tube, angle is acute angle;
The front end of described gap running channel is provided with subsidy, forms Feeding channel.
Preferably, described gap running channel comprises multiple gaps running channel section, and described vertical tube is communicated with described die ontology by multiple described gaps running channel section.
Preferably, acute angle transition is passed through between described gap running channel and described vertical tube.
Preferably, the pass between the width of described subsidy and feeding distance is:
δ
1span be [0.6 δ, 0.8 δ]
Wherein, δ
1the width of subsidy, δ is that feeding distance is determined.
Preferably, the span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body];
Wherein, the height of described foundry goods body is more than or equal to 300mm.
The described method for designing preventing the tubular casting moulding system of crackle provided according to another aspect of the present invention, comprises the steps:
Step S1: be set to acute angle by connecting between gap running channel and vertical tube;
Step S2: arrange subsidy in running channel front end, gap, forms Feeding channel;
Step S3: gap running channel is designed to multisection type.
Preferably, described gap running channel comprises multiple gaps running channel section, and described vertical tube is communicated with described die ontology by multiple described gaps running channel section.
Preferably, acute angle transition is passed through between described gap running channel and described vertical tube.
Preferably, the pass between the width of described subsidy and feeding distance is:
δ
1＝(0.6～0.8)δ
Wherein, δ
1the width of subsidy, δ is that feeding distance is determined.
Preferably, the span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body];
Wherein, the height of described foundry goods body is more than or equal to 300mm.
Compared with prior art, the present invention has following beneficial effect:
1, in the present invention, between gap running channel and vertical tube, connection arranges acute angle, causes directional stress to concentrate, and guides crackle to produce between gap running channel and vertical tube, thus release casting stress, prevent crackle from producing at foundry goods body;
2, arrange subsidy in running channel front end, gap in the present invention, form Feeding channel, and make to move outside thermal center, the round-corner transition of simultaneously subsidizing formation prevents stress from concentrating, and indirectly guides crackle to produce in appointed part;
3, in the present invention, gap running channel is designed to multisection type, effectively reduces the tension of vertical tube distortion to foundry goods, also can carry more acute angle transition region simultaneously, stress is farthest discharged;
4, the present invention is applicable to the counter-pressure casting of tubular foundry goods;
5, structure of the present invention is simple, rationally distributed, is easy to promote.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the method for designing flow chart of steps of the tubular casting moulding system preventing crackle in the present invention;
Fig. 2 is the structural representation of the tubular casting moulding system preventing crackle in the present invention;
Fig. 3 is the partial enlarged drawing of part A in Fig. 2.
In figure:
1 is gap running channel;
2 is vertical tube;
3 is subsidy;
4 is foundry goods body.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
In the present embodiment, the tubular casting moulding system preventing crackle provided by the invention, comprises vertical tube 2, gap running channel 1 and foundry goods body 4;
Wherein, described vertical tube 2 is communicated with the rear end of described gap running channel 1, and the front end of described gap running channel 1 is communicated with described foundry goods body 4; Between the upper side of described gap running channel 1 and vertical tube 2, angle is acute angle; The front end of described gap running channel 1 is provided with subsidy 3, forms Feeding channel.
Described gap running channel 1 comprises multiple gaps running channel section, and described vertical tube 2 is communicated with described die ontology by multiple described gaps running channel section.By acute angle transition between described gap running channel 1 and described vertical tube 2.
Pass between the width of described subsidy 3 and feeding distance is:
δ
1＝(0.6～0.8)δ
Wherein, δ
1the width of subsidy 3, δ is that feeding distance is determined.Namely the width of gap running channel 1 front end subsidy is determined according to foundry goods diameter and feeding distance.
The span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body]; Described foundry goods height divided by parameter size determine according to foundry goods mobility and foundry goods diameter
Wherein, described foundry goods height is more than or equal to 300mm.
The method for designing preventing the tubular casting moulding system of crackle provided by the invention, comprises the steps:
Step S1: be set to acute angle by connecting between gap running channel 1 and vertical tube 2;
Step S2: arrange subsidy 3 in gap running channel 1 front end, forms Feeding channel;
Step S3: gap running channel 1 is designed to multisection type.
Described gap running channel 1 comprises multiple gaps running channel section, and described vertical tube 2 is communicated with described die ontology by multiple described gaps running channel section.By acute angle transition between described gap running channel 1 and described vertical tube 2.Pass between the width of described subsidy 3 and feeding distance is:
δ
1＝(0.6～0.8)δ
Wherein, δ
1the width of subsidy 3, δ is that feeding distance is determined.
The span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body];
Wherein, the height of described foundry goods body is more than or equal to 300mm.
The principle of the method for designing of the tubular casting moulding system of crackle that prevents provided by the invention is:
Connect between gap running channel 1 and vertical tube 2 and acute angle is set, cause directional stress to concentrate, guide crackle to produce between gap running channel 1 and vertical tube 2, thus release casting stress, prevent crackle from producing at foundry goods body 4;
Subsidy 3 is set in gap running channel 1 front end, forms Feeding channel, and make to move outside thermal center, subsidize 3 round-corner transitions formed simultaneously and prevent stress from concentrating, indirectly guide crackle to produce in appointed part;
Gap running channel 1 is designed to multisection type, effectively reduces vertical tube 2 and is out of shape tension to foundry goods, also can carry more acute angle transition region simultaneously, stress is farthest discharged.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. prevent a tubular casting moulding system for crackle, it is characterized in that, comprise vertical tube, gap running channel and foundry goods body;
Wherein, described vertical tube is communicated with the rear end of described gap running channel, and the front end of described gap running channel is communicated with described foundry goods body; Between the upper side of described gap running channel and vertical tube, angle is acute angle;
The front end of described gap running channel is provided with subsidy, forms Feeding channel.
2. the tubular casting moulding system preventing crackle according to claim 1, is characterized in that, described gap running channel comprises multiple gaps running channel section, and described vertical tube is communicated with described die ontology by multiple described gaps running channel section.
3. the tubular casting moulding system preventing crackle according to claim 1, is characterized in that, by acute angle transition between described gap running channel and described vertical tube.
4. the tubular casting moulding system preventing crackle according to claim 1, it is characterized in that, the pass between the width of described subsidy and feeding distance is:
δ
1span be [0.6 δ, 0.8 δ]
Wherein, δ
1the width of subsidy, δ is that feeding distance is determined.
5. the tubular casting moulding system preventing crackle according to claim 2, is characterized in that, the span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body];
Wherein, the height of described foundry goods body is more than or equal to 300mm.
6. the method for designing preventing the tubular casting moulding system of crackle described in any one of claim 1 to 5, is characterized in that, comprise the steps:
Step S1: be set to acute angle by connecting between gap running channel and vertical tube;
Step S2: arrange subsidy in running channel front end, gap, forms Feeding channel;
Step S3: gap running channel is designed to multisection type.
7. the method for designing preventing the tubular casting moulding system of crackle according to claim 6, is characterized in that,
Described gap running channel comprises multiple gaps running channel section, and described vertical tube is communicated with described die ontology by multiple described gaps running channel section.
8. the method for designing preventing the tubular casting moulding system of crackle according to claim 6, is characterized in that, by acute angle transition between described gap running channel and described vertical tube.
9. the method for designing preventing the tubular casting moulding system of crackle according to claim 6, is characterized in that,
Pass between the width of described subsidy and feeding distance is:
δ
1＝(0.6～0.8)δ
Wherein, δ
1the width of subsidy, δ is that feeding distance is determined.
10. the method for designing preventing the tubular casting moulding system of crackle according to claim 7, is characterized in that, the span of described gap running channel hop count amount T is [height/200mm of foundry goods body, the height/400mm of foundry goods body];
Wherein, the height of described foundry goods body is more than or equal to 300mm.
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| CN201510710480.5A CN105195676B (en) | 2015-10-27 | 2015-10-27 | Prevent the tubular casting moulding system and its design method of crackle |
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|---|---|---|---|
| CN201510710480.5A CN105195676B (en) | 2015-10-27 | 2015-10-27 | Prevent the tubular casting moulding system and its design method of crackle |
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| CN105195676A true CN105195676A (en) | 2015-12-30 |
| CN105195676B CN105195676B (en) | 2018-10-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880522A (en) * | 2016-05-16 | 2016-08-24 | 湖北三江航天万峰科技发展有限公司 | Tail wing pouring system and tail wing manufacturing method for aluminum alloy underwater launching tube |
| CN106424573A (en) * | 2016-11-08 | 2017-02-22 | 上海航天精密机械研究所 | Cylindrical casting feeding method |
| CN106583657A (en) * | 2016-12-13 | 2017-04-26 | 山西平阳重工机械有限责任公司 | Solidification and feeding method for complicated annular thin-wall shell steel casting |
| CN109848370A (en) * | 2019-04-03 | 2019-06-07 | 洛阳乾中新材料科技有限公司 | A kind of sand casting casting external form moulding tooling |
| CN110681845A (en) * | 2019-08-28 | 2020-01-14 | 贵州航天风华精密设备有限公司 | Cabin gap pouring structure |
| CN114012036A (en) * | 2021-10-09 | 2022-02-08 | 上海航天精密机械研究所 | Casting method of moving coil casting for cabin vibration test |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105880522A (en) * | 2016-05-16 | 2016-08-24 | 湖北三江航天万峰科技发展有限公司 | Tail wing pouring system and tail wing manufacturing method for aluminum alloy underwater launching tube |
| CN106424573A (en) * | 2016-11-08 | 2017-02-22 | 上海航天精密机械研究所 | Cylindrical casting feeding method |
| CN106583657A (en) * | 2016-12-13 | 2017-04-26 | 山西平阳重工机械有限责任公司 | Solidification and feeding method for complicated annular thin-wall shell steel casting |
| CN109848370A (en) * | 2019-04-03 | 2019-06-07 | 洛阳乾中新材料科技有限公司 | A kind of sand casting casting external form moulding tooling |
| CN110681845A (en) * | 2019-08-28 | 2020-01-14 | 贵州航天风华精密设备有限公司 | Cabin gap pouring structure |
| CN114012036A (en) * | 2021-10-09 | 2022-02-08 | 上海航天精密机械研究所 | Casting method of moving coil casting for cabin vibration test |
| CN114012036B (en) * | 2021-10-09 | 2023-12-12 | 上海航天精密机械研究所 | Casting method of moving coil casting for cabin vibration test |
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| Publication number | Publication date |
|---|---|
| CN105195676B (en) | 2018-10-12 |
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