WO2018039853A1 - 一种液压先导阀体铸件及其模具 - Google Patents

一种液压先导阀体铸件及其模具 Download PDF

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Publication number
WO2018039853A1
WO2018039853A1 PCT/CN2016/097128 CN2016097128W WO2018039853A1 WO 2018039853 A1 WO2018039853 A1 WO 2018039853A1 CN 2016097128 W CN2016097128 W CN 2016097128W WO 2018039853 A1 WO2018039853 A1 WO 2018039853A1
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valve body
sand core
hydraulic pilot
casting
pilot valve
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PCT/CN2016/097128
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English (en)
French (fr)
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丁先华
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丁先华
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Priority to PCT/CN2016/097128 priority Critical patent/WO2018039853A1/zh
Publication of WO2018039853A1 publication Critical patent/WO2018039853A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor

Definitions

  • the invention relates to the field of valve body castings and moulds thereof, in particular to a hydraulic pilot valve body casting and a mould thereof.
  • the hydraulic pilot valve body casting is mainly used for the hydraulic control system of large loader.
  • China's industry is not strong, and the current situation of overcapacity of medium and low-end products and the high-end hydraulic components are almost completely dependent on imports are urgently needed.
  • the existing hydraulic pilot valve body castings have the following disadvantages: 1.
  • the casting has more air holes, and the scrap rate caused by the plane air holes reaches 70 or more.
  • the main reason is that the thickness of the sand core in the casting mold is large, and the gas generation amount is large, and the core is connected.
  • the diameter of the sand core is only 5 mm. It is difficult to discharge the gas from the middle sand core to the outside of the mold quickly. A large part of the gas will invade into the mold to produce the pores of the casting.
  • the casting flow path is very complicated and the center
  • the sand core of the part is large, the thickness reaches about 20 mm, and the sand core connecting the sand of the center is very small, and the diameter is only about 5 mm.
  • the sand core is not exhausted and the fine sand core is in the molten iron and the high temperature.
  • the ratio of the lower core is extremely high.
  • the present invention provides a hydraulic pilot valve body casting, comprising a valve body and a valve body base, the valve body is cylindrical, the valve body base is square, and the valve body is The interior is provided with seven vertical flow passages, and the top of the valve body is provided with seven flow passages corresponding to the seven vertical flow passages.
  • a center of the top of the valve body is provided with a flow passage opening I, and six flow passage openings II are evenly distributed around the flow passage opening I, and six of the flow passage openings II are arranged in a hexagonal shape.
  • the diameter of the flow channel opening I is larger than the diameter of the flow channel opening II.
  • valve body and the valve body base are integrally formed by an underfill casting process.
  • the present invention also provides a hydraulic pilot casting mold comprising a shell type and a sand core, the shell type comprising a left shell type and a right shell type, the sand core being disposed between the left shell type and the right shell type, The left shell type, the right shell type and the sand core are clamped to form a cavity, and the sand core is assembled by a main sand core and a plurality of small sand cores, the main sand core including a left sand core and a right sand core.
  • the inner portion of the left sand core and the right sand core is formed into a hollow portion for collecting gas, and the top of the small sand core is provided with a vertical vent hole; the upper end of the shell type is provided with a sprue cup and A riser, the bottom of the riser being coupled to the upper end of the cavity, the gate being coupled to the lower end of the cavity by a runner for injecting a potting solution from the bottom of the cavity.
  • the riser is a heat riser having a diameter of 80 mm.
  • the sand core is a coated sand core.
  • the hydraulic pilot valve body casting of the invention has a tensile strength of not less than 240 MPa and a hardness of 190 HB-220 HB, and the casting has high integration strength, reliability and long service life.
  • the left sand core and the right sand core of the main sand core of the hydraulic pilot valve body casting mold of the present invention wherein the left sand core and the right sand core are formed into a hollow portion for collecting gas, and
  • the top of the small sand core is provided with a vertical venting hole.
  • the venting speed of the venting hole is discharged to the outside of the hollow portion, thereby greatly reducing the pores of the casting; in addition, the inner hollow main core reduces the coating. Sand usage and gas production.
  • the gate of the hydraulic pilot valve body casting mold of the present invention is connected to the lower end of the cavity through a runner for injecting the pouring liquid from the bottom of the cavity, so that the molten iron flow is stable and the molten iron is reduced.
  • the sand core breakage caused by the flow is beneficial to the exhaust, ensuring that the suspended cores on both sides are not easily deformed or broken.
  • the riser of the upper end of the shell type of the hydraulic pilot valve body casting mold of the present invention is a heat riser with a diameter of 80 mm, which enhances the feeding effect of the riser, and the cold iron water and the molten iron containing gas and slag overflow into the riser. Reduces slag and porosity defects in the casting.
  • Figure 1 is a plan view of a hydraulic pilot valve body casting of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a cross-sectional view taken along line B-B of Figure 1;
  • Figure 4 is a cross-sectional view taken along line C-C of Figure 1;
  • Figure 5 is a side elevational view of the hydraulic pilot valve body casting of the present invention.
  • the reference numerals in the figure correspond to: 1-valve body, 2-valve body base, 3-vertical flow channel, 4-flow channel port, 41-channel port I, 42-channel port II.
  • the present invention discloses a hydraulic pilot valve body casting, comprising a valve body 1 and a valve body base 2, wherein the valve body 1 and the valve body base 2 are integrally formed by an underfill casting process.
  • the valve body 1 has a cylindrical shape
  • the valve body base 2 has a square shape
  • the inside of the valve body 1 is provided with seven vertical flow passages 3
  • the top of the valve body 1 is provided with The seven flow passages 3 corresponding to the seven vertical flow passages 3;
  • the distribution of the seven flow passage openings is as follows: the center of the top of the valve body 1 is provided with a flow passage opening I41 around the flow passage opening I41
  • the main technical parameters of the hydraulic pilot valve body casting of the present invention are as follows:
  • the invention also discloses a hydraulic pilot valve body casting mold, comprising a shell type and a sand core, the shell type comprising a left shell type and a right shell type, the sand core being disposed in the middle of the left shell type and the right shell type
  • the left shell type, the right shell type and the sand core are clamped to form a cavity
  • the sand core is a coated sand core, which is assembled by a main sand core and a plurality of small sand cores, the main sand core
  • the left sand core and the right sand core are formed, and the inner portion of the left sand core and the right sand core are formed into a hollow portion for collecting gas, and the top of the small sand core is provided with a vertical vent hole, the sand
  • the gas emitted by the core in the heated state gathers in the hollow portion, and the vent hole on the small sand core rapidly discharges the gas emitted from the sand core
  • the upper end of the shell is provided with a gate cup, and the gate is connected to the lower end of the cavity through a runner for injecting the pouring liquid from the bottom of the cavity, that is, by the existing top injection process It is changed to the bottom injection process to make the flow of molten iron smooth, reduce the breakage of the core caused by the turbulent flow of molten iron, and facilitate the exhaust, ensuring that the suspended cores on both sides are not easily deformed or broken.
  • the bottom casting process casting riser becomes a cold riser, which is not conducive to the feeding. Therefore, a riser is provided at the upper end of the shell type, and the bottom of the riser is connected with the upper end of the cavity, and the riser has a diameter of 80 mm.
  • the hot riser strengthens the feeding effect of the riser, while the cold iron water and the molten iron containing gas and slag overflow into the riser, reducing the slag and porosity defects of the casting.
  • the hydraulic pilot valve body casting of the invention has a tensile strength of not less than 240 MPa and a hardness of 190 HB-220 HB, and the casting has high integration strength, reliability and long service life.
  • the left sand core and the right sand core of the main sand core of the hydraulic pilot valve body casting mold of the present invention wherein the left sand core and the right sand core are formed into a hollow portion for collecting gas, and
  • the top of the small sand core is provided with a vertical venting hole.
  • the venting speed of the venting hole is discharged to the outside of the hollow portion, thereby greatly reducing the pores of the casting; in addition, the inner hollow main core reduces the coating. Sand usage and gas production.
  • the gate of the hydraulic pilot valve body casting mold of the present invention is connected to the lower end of the cavity through a runner for injecting the pouring liquid from the bottom of the cavity, so that the molten iron flow is stable and the molten iron is reduced.
  • the sand core breakage caused by the flow is beneficial to the exhaust, ensuring that the suspended cores on both sides are not easily deformed or broken.
  • the riser of the upper end of the shell type of the hydraulic pilot valve body casting mold of the present invention is a heat riser with a diameter of 80 mm, which enhances the feeding effect of the riser, and the cold iron water and the molten iron containing gas and slag overflow into the riser. Reduces slag and porosity defects in the casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

一种液压先导阀体铸件及其模具，包括阀体主体(1)和阀体底座(2)，所述阀体主体(1)呈圆柱形，所述阀体底座(2)呈四方形，所述阀体主体(1)的内部设有七个竖向流道(3)，所述阀体主体(1)的顶部设置有与所述七个竖向流道(3)相对应的七个流道口(4)；所述模具的砂芯由主砂芯和若干小砂芯组装成型，主砂芯包括左砂芯和右砂芯，左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，小砂芯的顶部上设置有垂直排气孔；模具的壳型的上端设置有浇口杯和冒口，冒口的底部与型腔的上端连接，浇口通过浇道与型腔的下端连接，用于将浇注液从型腔的底部注入；液压先导阀体铸件表面气孔较少且铸造过程中的断芯比例较小。

Description

一种液压先导阀体铸件及其模具 技术领域
本发明涉及阀体铸件及其模具领域，尤其涉及一种液压先导阀体铸件及其模具。
背景技术
液压先导阀体铸件，主要用于大型装载机液压控制***，作为工程机械液压***关键零部件，具有集成度高、可靠性强、寿命长等优点，市场前景较好。但我国产业大而不强，中低档产品产能过剩而高端液压元件几乎完全依赖进口的现状急需解决。
现有的液压先导阀体铸件存在以下缺点：一、该铸件上气孔较多，平面气孔导致的废品率达到70以上，主要原因是铸件模具中间砂芯厚度，发气量大，而连接此芯的砂芯直径只有5毫米，很难将中间砂芯发出的气体迅速地排到铸型外面，有很大一部分气体就会侵入到铸型内产生铸件气孔；二、该铸件流道很复杂，中心部位砂芯较大，厚度达到20毫米左右，而连接该中心部位砂的砂芯很小，直径只有5毫米左右，浇注时砂芯排气不畅且细小的砂芯在铁水冲现和高温作用下断芯比例极高。
因此，研发一种气孔较少且砂芯断裂比例较低的液压先导阀体铸件及生产该铸件的模具，显得格外重要。
发明内容
本发明的目的在于克服现有技术的缺陷提出一种气孔较少且砂芯断裂比例较低的液压先导阀体铸件及其模具。
为了解决上述技术问题，本发明提供了一种液压先导阀体铸件，包括阀体主体和阀体底座，所述阀体主体呈圆柱形，所述阀体底座呈四方形，所述阀体主体的内部设有七个竖向流道，所述阀体主体的顶部设置有与所述七个竖向流道相对应的七个流道口。
优选地，所述阀体主体的顶部中心设置有一个流道口Ⅰ，所述流道口Ⅰ的周围均匀分布有六个流道口Ⅱ，六个所述流道口Ⅱ呈六边形排列。
优选地，所述流道口Ⅰ的直径大于所述流道口Ⅱ的直径。
进一步地，所述阀体主体和所述阀体底座采用底注铸造工艺一体成型。
本发明还提供了一种液压先导铸件模具，包括壳型和砂芯，所述壳型包括左壳型和右壳型，所述砂芯设置在所述左壳型和右壳型中间，所述左壳型、右壳型和所述砂芯合模后形成型腔，所述砂芯由主砂芯和若干小砂芯组装成型，所述主砂芯包括左砂芯和右砂芯，所述左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，所述小砂芯的顶部上设置有垂直排气孔；所述壳型的上端设置有浇口杯和冒口，所述冒口的底部与所述型腔的上端连接，所述浇口通过浇道与所述型腔的下端连接，用于将浇注液从所述型腔的底部注入。
优选地，所述冒口为发热冒口，直径为80mm。
优选地，所述砂芯为覆膜砂砂芯。
本发明的液压先导阀体铸件及其模具，具有如下有益效果：
1、本发明的液压先导阀体铸件抗拉强度不低于240Mpa，硬度为190HB-220HB，该铸件集成强度高、可靠性和使用寿命较长。
2、本发明的液压先导阀体铸件模具的主砂芯左砂芯和右砂芯，所述左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，且在小砂芯的顶部设置垂直排气孔，在铸造过程中，该排气孔速度将聚集在中空部位的气体排到型外，大大减少铸件的气孔；此外，内部中空的主砂芯减少了覆膜砂用量和发气量。
3、本发明的液压先导阀体铸件模具的浇口通过浇道与所述型腔的下端连接，用于将浇注液从所述型腔的底部注入，使铁水液流平稳，减少了铁水紊流引起的砂芯断裂有利于排气，保证两侧悬泘砂芯不易变形、断裂。
4、本发明的液压先导阀体铸件模具的壳型上端的冒口为直径为80mm的发热冒口，强化冒口的补缩作用，同时冷铁水和含气、渣的铁水溢到冒口里，减少了铸件的渣和气孔缺陷。
附图说明
为了更清楚地说明本发明的技术方案，下面将对实施例或现有技术描述中 所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它附图。
图1是本发明的液压先导阀体铸件的俯视图；
图2是图1的A-A方向剖视图；
图3是图1的B-B方向剖视图；
图4是图1的C-C方向剖视图；
图5是本发明的液压先导阀体铸件的侧面视图。
其中，图中附图标记对应为：1-阀体主体，2-阀体底座，3-竖向流道，4-流道口，41-流道口Ⅰ，42-流道口Ⅱ。
具体实施方式
下面将结合本发明实施例中的附图，对发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1-5，本发明公开了一种液压先导阀体铸件，包括阀体主体1和阀体底座2，所述阀体主体1和所述阀体底座2采用底注铸造工艺一体成型；所述阀体主体1呈圆柱形，所述阀体底座2呈四方形，所述阀体主体1的内部设有七个竖向流道3，所述阀体主体1的顶部设置有与所述七个竖向流道3相对应的七个流道口4；七个流道口的分布情况如下：所述阀体主体1的顶部中心设置有一个流道口Ⅰ41，所述流道口Ⅰ41的周围均匀分布有六个流道口Ⅱ42，六个所述流道口Ⅱ42呈六边形排列，所述流道口Ⅰ41的直径大于所述流道口Ⅱ42的直径。
本发明的液压先导阀体铸件的主要技术参数如下：
(1)材质：HT300
(2)本体抗拉强度：≥240Mpa
(3)硬度：HB190-220
(4)无夹渣、气孔、缩孔、缩松等铸造缺陷
(5)单重：5.2kg。
本发明还公开了一种液压先导阀体铸件模具，包括壳型和砂芯，所述壳型包括左壳型和右壳型，所述砂芯设置在所述左壳型和右壳型中间，所述左壳型、右壳型和所述砂芯合模后形成型腔，所述砂芯为覆膜砂砂芯，其由主砂芯和若干小砂芯组装成型，所述主砂芯包括左砂芯和右砂芯，所述左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，所述小砂芯的顶部上设置有垂直排气孔，该砂芯在受热状态下发出的气体聚集在中空部位，小砂芯上的排气孔迅速地将砂芯发出的气体排到型外，大大地减少铸件的气孔。
所述壳型的上端设置有浇口杯，所述浇口通过浇道与所述型腔的下端连接，用于将浇注液从所述型腔的底部注入，即由现有的顶注工艺改为底注工艺，使铁水液流平稳，减少了铁水紊流引起的砂芯断裂有利于排气，保证两侧悬泘砂芯不易变形、断裂。
底注工艺铸件冒口变成了冷冒口，不利于补缩，因此在所述壳型的上端设置有冒口，冒口的底部与所述型腔的上端连接，该冒口直径为80mm的发热冒口，强化冒口的补缩作用，同时冷铁水和含气、渣的铁水溢到冒口里，减少了铸件的渣和气孔缺陷。
本发明的液压先导阀体铸件及其模具，具有如下有益效果：
1、本发明的液压先导阀体铸件抗拉强度不低于240Mpa，硬度为190HB-220HB，该铸件集成强度高、可靠性和使用寿命较长。
2、本发明的液压先导阀体铸件模具的主砂芯左砂芯和右砂芯，所述左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，且在小砂芯的顶部设置垂直排气孔，在铸造过程中，该排气孔速度将聚集在中空部位的气体排到型外，大大减少铸件的气孔；此外，内部中空的主砂芯减少了覆膜砂用量和发气量。
3、本发明的液压先导阀体铸件模具的浇口通过浇道与所述型腔的下端连接，用于将浇注液从所述型腔的底部注入，使铁水液流平稳，减少了铁水紊流引起的砂芯断裂有利于排气，保证两侧悬泘砂芯不易变形、断裂。
4、本发明的液压先导阀体铸件模具的壳型上端的冒口为直径为80mm的发热冒口，强化冒口的补缩作用，同时冷铁水和含气、渣的铁水溢到冒口里，减少了铸件的渣和气孔缺陷。
上所揭露的仅为本发明的较佳实施例而已，当然不能以此来限定本发明之 权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。

Claims (7)

  1. 一种液压先导阀体铸件，其特征在于，包括阀体主体(1)和阀体底座(2)，所述阀体主体(1)呈圆柱形，所述阀体底座(2)呈四方形，所述阀体主体(1)的内部设有七个竖向流道(3)，所述阀体主体(1)的顶部设置有与所述七个竖向流道(3)相对应的七个流道口(4)。
  2. 根据权利要求1所述的液压先导阀体铸件，其特征在于，所述阀体主体(1)的顶部中心设置有一个流道口Ⅰ(41)，所述流道口Ⅰ(41)的周围均匀分布有六个流道口Ⅱ(42)，六个所述流道口Ⅱ(42)呈六边形排列。
  3. 根据权利要求2所述的液压先导阀体铸件，其特征在于，所述流道口Ⅰ(41)的直径大于所述流道口Ⅱ(42)的直径。
  4. 根据权利要求1-3中任意一项权利要求所述的液压先导阀体铸件，其特征在于，所述阀体主体(1)和所述阀体底座(2)采用底注铸造工艺一体成型。
  5. 一种液压先导阀体铸件模具，包括壳型和砂芯，所述壳型包括左壳型和右壳型，所述砂芯设置在所述左壳型和右壳型中间，所述左壳型、右壳型和所述砂芯合模后形成型腔，其特征在于，
    所述砂芯由主砂芯和若干小砂芯组装成型，所述主砂芯包括左砂芯和右砂芯，所述左砂芯和右砂芯粘接成形后的内部形成一用于聚集气体的中空部位，所述小砂芯的顶部上设置有垂直排气孔；
    所述壳型的上端设置有浇口杯和冒口，所述冒口的底部与所述型腔的上端连接，所述浇口通过浇道与所述型腔的下端连接，用于将浇注液从所述型腔的底部注入。
  6. 根据权利要求5所述的液压先导阀体铸件模具，其特征在于，所述冒口为发热冒口，直径为80mm。
  7. 根据权利要求5或6所述的液压先导阀体铸件模具，其特征在于，所述砂芯为覆膜砂砂芯。
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109332585A (zh) * 2018-11-16 2019-02-15 西安合力汽车配件有限公司 一种链轮砂型以及利用链轮砂型浇注链轮的方法
CN110181000A (zh) * 2019-05-29 2019-08-30 共享铸钢有限公司 阀体类铸件铸造模具成型方法
CN110216245A (zh) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 一种150磅闸阀体座部无冒口模具及设计方法
CN110216244A (zh) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 一种止回阀阀体铸钢件的铸具及其制造工艺
CN113864505A (zh) * 2021-09-28 2021-12-31 常州通合新材料科技有限公司 电动阀门下壳体及其模具和生产工艺
CN114147182A (zh) * 2021-12-07 2022-03-08 勤威(天津)工业有限公司 一种砂芯成型高品质高步留支架的铸造模型结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2264283Y (zh) * 1996-05-13 1997-10-08 杨永祥 先导活塞式减压阀
US20040226609A1 (en) * 2003-05-15 2004-11-18 Ali Marandi Valve having integrally cast end connections
AU2012101143A4 (en) * 2012-07-31 2012-10-25 Heval Hengdian Machinery Co., Ltd. Cnnc A Valve Casting With A Cross Mark
CN104107598A (zh) * 2013-04-18 2014-10-22 世格流体纽曼蒂克（印度）私人有限公司 双排放脉冲阀
CN105757308A (zh) * 2016-04-22 2016-07-13 南通华东油压科技有限公司 一种液压先导阀体铸件及其模具
CN205715888U (zh) * 2016-04-22 2016-11-23 南通华东油压科技有限公司 一种液压先导阀体铸件

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2264283Y (zh) * 1996-05-13 1997-10-08 杨永祥 先导活塞式减压阀
US20040226609A1 (en) * 2003-05-15 2004-11-18 Ali Marandi Valve having integrally cast end connections
AU2012101143A4 (en) * 2012-07-31 2012-10-25 Heval Hengdian Machinery Co., Ltd. Cnnc A Valve Casting With A Cross Mark
CN104107598A (zh) * 2013-04-18 2014-10-22 世格流体纽曼蒂克（印度）私人有限公司 双排放脉冲阀
CN105757308A (zh) * 2016-04-22 2016-07-13 南通华东油压科技有限公司 一种液压先导阀体铸件及其模具
CN205715888U (zh) * 2016-04-22 2016-11-23 南通华东油压科技有限公司 一种液压先导阀体铸件

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109332585A (zh) * 2018-11-16 2019-02-15 西安合力汽车配件有限公司 一种链轮砂型以及利用链轮砂型浇注链轮的方法
CN109332585B (zh) * 2018-11-16 2024-02-23 西安合力汽车配件有限公司 一种链轮砂型以及利用链轮砂型浇注链轮的方法
CN110216245A (zh) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 一种150磅闸阀体座部无冒口模具及设计方法
CN110216244A (zh) * 2019-04-20 2019-09-10 福建大通互惠精密铸造有限公司 一种止回阀阀体铸钢件的铸具及其制造工艺
CN110216245B (zh) * 2019-04-20 2024-05-31 福建大通互惠精密铸造有限公司 一种150磅闸阀体座部无冒口模具及设计方法
CN110216244B (zh) * 2019-04-20 2024-05-31 福建大通互惠精密铸造有限公司 一种止回阀阀体铸钢件的铸具及其制造工艺
CN110181000A (zh) * 2019-05-29 2019-08-30 共享铸钢有限公司 阀体类铸件铸造模具成型方法
CN113864505A (zh) * 2021-09-28 2021-12-31 常州通合新材料科技有限公司 电动阀门下壳体及其模具和生产工艺
CN114147182A (zh) * 2021-12-07 2022-03-08 勤威(天津)工业有限公司 一种砂芯成型高品质高步留支架的铸造模型结构
CN114147182B (zh) * 2021-12-07 2024-01-23 勤威(天津)工业有限公司 一种砂芯成型高品质高步留支架的铸造模型结构

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