CN201405038Y - 砂型铸造用排气装置 - Google Patents
砂型铸造用排气装置 Download PDFInfo
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- CN201405038Y CN201405038Y CN2009200458673U CN200920045867U CN201405038Y CN 201405038 Y CN201405038 Y CN 201405038Y CN 2009200458673 U CN2009200458673 U CN 2009200458673U CN 200920045867 U CN200920045867 U CN 200920045867U CN 201405038 Y CN201405038 Y CN 201405038Y
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- casting
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- foundry goods
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- 238000000465 moulding Methods 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 3
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Abstract
本实用新型涉及一种砂型铸造用排气装置，包括直浇道、横浇道以及扁平铸件，所述的扁平铸件大平面横向设置，横浇道的末端设置有冷料井，铸件与横浇道之间通过内浇道相连通，铸件内设置有砂芯，所述的砂芯内设置有排气通道。本实用新型通过可靠的排气设置有效的将型腔内的气体沿排气通道排出，消除了型腔内压力，金属液流动顺畅，提高了铸件的质量，提高了铸件的成品率，进一步降低了生产成本。
Description
砂型铸造用排气装置
技术领域
本实用新型涉及一种细长型腔的铸件砂型铸造用排气装置。 背景技术
砂型铸造铸型，特别是湿型在高温液态合金的热作用下会产生大量 的气体，其气体来源有，型砂内水分在高温作用下汽化产生大量的水蒸 气，型砂组成物内有机物的燃烧升华，碳酸盐等受热分解生产的气体， 型砂和型腔内原有的气体受热后膨胀等等。砂铸铸型在浇注时产生的气 体量很大。因此铸型必须具备一定的排气能力，否则，浇注过程中会发 生呛火、造成合金液的飞溅、会增加铸型内压力，导致金属液流动受阻、 会使铸件产生大量的气孔和浇不足等铸造缺陷。
铸型的排气， 一方面靠型内设置的透气眼、出气孔或冒口来解决。 另一方面决定于铸型壁层内型砂的透气性。对一般铸件来说，依靠以上 两方面均可实现理想排气，但对一些特殊形状、工艺性特别的铸件，单 纯依靠以上措施不能理想排除型腔气体，导致铸件生产的失败。
本铸件具有两条细长盲腔，中间一厚15mm隔板隔开，零件左端封闭，
右端开口盲腔截面大小与其长度比例相差悬殊。（见图l) 实用新型内容
本实用新型要解决的技术问题是：提供一种使得铸件型腔内气体按 照要求排除、铸件合格的砂型铸造用排气装置。
为了克服背景技术中存在的缺陷，本实用新型解决其技术问题所采 用的技术方案是： 一种砂型铸造用排气装置，包括直浇道、横浇道以及 扁平铸件，所述的扁平铸件大平面横向设置，横浇道的末端设置有冷料井，铸件与横浇道之间通过内浇道相连通，铸件内设置有砂芯，所述的 砂芯内设置有排气通道。
根据本实用新型的另一个实施例，砂型铸造用排气装置进一步包括 所述的排气通道由尼龙纤维管制成。
根据本实用新型的另一个实施例，砂型铸造用排气装置进一步包括 所述的砂芯由树脂砂成型。
根据本实用新型的另一个实施例，砂型铸造用排气装置进一步包括 还包括吸气源，所述的吸气源与排气通道连通。
根据本实用新型的另一个实施例，砂型铸造用排气装置进一步包括 所述的铸件为弹翼。
本实用新型解决了背景技术中存在的缺陷，可靠的排气设置有效的
将型腔内的气体沿排气通道排出，消除了型腔内压力，金属液流动顺畅，
提高了铸件的质量，提高了铸件的成品率，进一步降低了生产成本。 附图说明
下面结合附图和实施例对本实用新型进一步说明。
图1是现有技术铸件的参考图；
图2是本实用新型的优选实施例的结构示意图；
其中：l、直浇道，2、横浇道，3、铸件，4、冷料井，5、内浇道，6、 砂芯，7、排气通道，8、吸气源。 具体实施方式
现在结合附图和优选实施例对本实用新型作进一步详细的说明。这 些附图均为简化的示意图，仅以示意方式说明本实用新型的基本结构， 因此其仅显示与本实用新型有关的构成。如图2所示， 一种砂型铸造用排气装置，包括直浇道1、横浇道2 以及扁平铸件3，所述的扁平铸件3大平面横向设置，横浇道2的末端 设置有冷料井4，铸件3与横浇道2之间通过内浇道5相连通，铸件3 内设置有砂芯6，所述的砂芯6内设置有排气通道7。其中，铸件3具有 A端与B端。
根据铸件特点，确定浇注系统，使金属液沿A端向B端逐步浇注成 型铸件3，经工艺试验采取此工艺比较合适。细长盲腔采用树脂砂芯6 成型，采用倾斜浇注，B端抬高。树脂砂芯6在高温下产生大量的气体 通过排气通道7排出。
为了顺利排出型腔内气体，本实用新型采取以下措施： 首先，在树脂砂芯6内用直径C10mm的透气尼龙纤维管置放其中， 形成排气通道7。
其次，在无外力作用下，型腔中的气体由A端向B端迁移，由于B 端是盲腔，气体无法顺利排出型腔。为此本实用新型利用吸气源8,将 吸气源8与透气尼龙纤维管相连，有效地引导型腔气体沿排气通道7排 出型腔。
以上述依据本实用新型的理想实施例为启示，通过上述的说明内 容，相关工作人员完全可以在不偏离本项实用新型技术思想的范围内， 进行多样的变更以及修改。本项实用新型的技术性范围并不局限于说明 书上的内容，必须要根据权利要求范围来确定其技术性范围。
5
Claims (5)
1、一种砂型铸造用排气装置，包括直浇道、横浇道以及扁平铸件，所述的扁平铸件大平面横向设置，横浇道的末端设置有冷料井，铸件与横浇道之间通过内浇道相连通，铸件内设置有砂芯，其特征在于：所述的砂芯内设置有排气通道。
2、 如权利要求1所述的砂型铸造用排气装置，其特征在于：所述的排 气通道由尼龙纤维管制成。
3、 如权利要求1所述的砂型铸造用排气装置，其特征在于：所述的砂 芯由树脂砂成型。
4、 如权利要求1所述的砂型铸造用排气装置，其特征在于：还包括吸 气源，所述的吸气源与排气通道连通。
5、 如权利要求1所述的砂型铸造用排气装置，其特征在于：所述的铸 件为弹翼。
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869902A (zh) * | 2010-07-07 | 2010-10-27 | 姚会元 | 真空净化烟气浇注平台 |
| CN101885038A (zh) * | 2009-05-14 | 2010-11-17 | 扬州峰明金属制品有限公司 | 砂型铸造用排气装置 |
| CN102114524A (zh) * | 2010-12-28 | 2011-07-06 | 中国第一汽车集团公司 | 复杂铸件的砂芯排气方法 |
| CN103042172A (zh) * | 2013-01-23 | 2013-04-17 | 辽宁福鞍重工股份有限公司 | 一种复杂铸件连体下部砂芯气体上排方法 |
| CN105344938A (zh) * | 2015-10-30 | 2016-02-24 | 鹰普（中国）有限公司 | 一种排蜡方法 |
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2009
- 2009-05-14 CN CN2009200458673U patent/CN201405038Y/zh not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885038A (zh) * | 2009-05-14 | 2010-11-17 | 扬州峰明金属制品有限公司 | 砂型铸造用排气装置 |
| CN101869902A (zh) * | 2010-07-07 | 2010-10-27 | 姚会元 | 真空净化烟气浇注平台 |
| CN102114524A (zh) * | 2010-12-28 | 2011-07-06 | 中国第一汽车集团公司 | 复杂铸件的砂芯排气方法 |
| CN103042172A (zh) * | 2013-01-23 | 2013-04-17 | 辽宁福鞍重工股份有限公司 | 一种复杂铸件连体下部砂芯气体上排方法 |
| CN105344938A (zh) * | 2015-10-30 | 2016-02-24 | 鹰普（中国）有限公司 | 一种排蜡方法 |
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