CN112553509A - 一种用于动力转向泵支架的合金铸造工艺 - Google Patents

一种用于动力转向泵支架的合金铸造工艺 Download PDF

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CN112553509A
CN112553509A CN202011269374.5A CN202011269374A CN112553509A CN 112553509 A CN112553509 A CN 112553509A CN 202011269374 A CN202011269374 A CN 202011269374A CN 112553509 A CN112553509 A CN 112553509A
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李壮
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Taizhou Tianyu Traffic Equipment Co ltd
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Abstract

本发明公开了一种用于动力转向泵支架的合金铸造工艺，包括以下步骤；步骤一；成分设计，查阅资料设计合金的成分比例按比例投放原料，将原料熔炼并铸成合金金属块；步骤三；将合金金属块压铸制成动力转向泵支架；步骤四；对产品进行热处理实验，步骤五；对产品进行组织检验和性能检验；步骤六；进行工业试生产，本发明涉及合金铸造技术领域。该用于动力转向泵支架的合金铸造工艺完成发电机支架总成和动力转向泵支架车用压铸Al‑10Si‑0.3Mg合金组织、缺陷与力学性能研究，通过合金成分优化、压铸工艺改善、热处理等方法提升合金的塑性、强度和抗腐蚀性并在生产中进行应用。

Description

一种用于动力转向泵支架的合金铸造工艺
技术领域
本发明涉及合金铸造技术领域，具体为一种用于动力转向泵支架的合金铸造工艺。
背景技术
采用ADC12压铸铝合金生产的气门室罩盖、空调支架、发电机支架总成和动力转向泵支架等零件，结合真空MFT压铸技术，经热处理后其塑性可达14％，具有优良的应用潜能。
但目前关于该合金的公开系统研究较为缺乏，且热处理态下的真空压铸Aural2铸件塑性存在较大散度，严重降低了材料稳定性，已有研究表明，这与合金中的铸造缺陷有着密切的联系。
发明内容
针对现有技术的不足，本发明提供了一种用于动力转向泵支架的合金铸造工艺。
为实现以上目的，本发明通过以下技术方案予以实现：一种用于动力转向泵支架的合金铸造工艺，一种用于动力转向泵支架的合金铸造工艺，包括以下步骤；
步骤一；成分设计，查阅资料设计合金的成分比例；
步骤二；按比例投放原料，将原料熔炼并铸成合金金属块；
步骤三；将合金金属块压铸制成动力转向泵支架；
步骤四；对产品进行热处理实验，
步骤五；对产品进行组织检验和性能检验；
步骤六；进行工业试生产。
优选的：所述步骤三具体为，根据实际产品需求尺寸，制造模具，并且通过模具将合金金属块压铸成动力转向泵支架。
优选的：所述步骤四具体为采用CWF通用型马弗炉，温度设定为450℃，当炉温达到设定温度时装入样品，使用热电偶温度计记录样品温度随时间变化，待样品温度达到固溶温度时开始计时，固溶时间为1.5h，保温后水冷。
优选的：所述步骤五中对产品进行组织检验具体为，制备金相试样和透射电镜样品，并通过光学显微镜观察和扫描电子显微镜观察样品的组织表征和孔隙表征。
优选的：所述步骤五中性能检测具体为硬度测试和拉伸测试；硬度测试具体为将相对面角为一百三十六度的正四棱锥体以一定的负荷压入被测材料表面，并保持一定的时间，卸载后测量压痕对角线的长度，并通过一定公式计算其维氏硬度。
优选的：所述拉伸测试具体为利用图像采集器，拍摄变形前后待测物图像，经计算机系统运算后即可获得3D或2D全场位移和应变数据分布，并采用TescanMira3扫描电镜对所有拉伸测试后的样品断口进行观察分析，包括断口缺陷面积测量、夹杂物EDS分析、断裂机理分析等。
有益效果
本发明提供了一种用于动力转向泵支架的合金铸造工艺。具备以下有益效果：
(1)、该用于动力转向泵支架的合金铸造工艺，完成发电机支架总成和动力转向泵支架车用压铸Al-10Si-0.3Mg合金组织、缺陷与力学性能研究，通过合金成分优化、压铸工艺改善、热处理等方法提升合金的塑性、强度和抗腐蚀性并在生产中进行应用。
附图说明
图1为本发明的工艺流程图。
具体实施方式
下面将结合本发明实施例中的附图，对本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。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动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，本发明提供一种技术方案：一种用于动力转向泵支架的合金铸造工艺，一种用于动力转向泵支架的合金铸造工艺，包括以下步骤；
步骤一；成分设计，查阅资料设计合金的成分比例；
步骤二；按比例投放原料，将原料熔炼并铸成合金金属块；
步骤三；将合金金属块压铸制成动力转向泵支架，具体为，根据产品需求尺寸，制造模具，并且通过模具将合金金属块压铸成动力转向泵支架；
步骤四；对产品进行热处理实验；
步骤五；对产品进行组织检验和性能检验，制备金相试样和透射电镜样品，并通过光学显微镜观察和扫描电子显微镜观察样品的组织表征和孔隙表征；
性能检测具体为硬度测试和拉伸测试；硬度测试具体为将相对面角为一百三十六度的正四棱锥体以一定的负荷压入被测材料表面，并保持一定的时间，卸载后测量压痕对角线的长度，并通过一定公式计算其维氏硬度；拉伸测试具体为利用图像采集器，拍摄变形前后待测物图像，经计算机系统运算后即可获得3D或2D全场位移和应变数据分布，并采用TescanMira3扫描电镜对所有拉伸测试后的样品断口进行观察分析，包括断口缺陷面积测量、夹杂物EDS分析、断裂机理分析等
步骤六；进行工业试生产。
实施例；合金的典型铸态组织主要由α-Al基体、硬脆共晶组织以及块状AlSiFeMn以及少量针状AlMgSi相构成，其中α-Al基体包括在金属液进入型腔之前已经形核长大的枝晶状粗大ESC及在型腔内迅速形核长大的等轴状细晶；
热处理使铸态下α-Al基体中过饱和的Si在以硅弥散颗粒形式析出，连续珊瑚状共晶Si颗粒熔断且球化，Si对基体的固溶强化作用以及共晶Si对合金的强化作用减弱，但Si颗粒的析出和时效强化作用使得屈服强度升高，二者相互抵消使屈服强度变化不大；
而热处理后合金的加工硬化能力显著降低，抗拉强度大大降低；共晶Si颗粒和AlSiFeMn相是合金断裂时的主要裂纹源，由于熔断并球化的共晶Si颗粒变形时产生的应力集中程度大大减小，以及固溶处理使得Si元素对基体位错的运动阻力减小，使得热处理后的合金塑性显著升高；断口上缺陷的尺寸与材料延伸率具有十分明显的负相关关系，当断口中含有尺寸较大或冷隔类缺陷时，延伸率大大降低，且随着缺陷尺寸的增加，其对延伸率的危害越大；而当样品中不含尺寸较大的缩孔或冷隔类缺陷时，此时缺陷由于尺寸较小且弥散分布，对样品的危害较小，延伸率较高，则可能有其他因素列如细小缺陷的团簇、第二相与ESC晶粒的不均匀分布等共同影响材料的断裂行为和塑性。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。

Claims (6)

1.一种用于动力转向泵支架的合金铸造工艺，包括以下步骤；
步骤一；成分设计，查阅资料设计合金的成分比例；
步骤二；按比例投放原料，将原料熔炼并铸成合金金属块；
步骤三；将合金金属块压铸制成动力转向泵支架；
步骤四；对产品进行热处理实验，
步骤五；对产品进行组织检验和性能检验；
步骤六；进行工业试生产。
2.根据权利要求1所述的一种用于动力转向泵支架的合金铸造工艺，其特征在于：所述步骤三具体为根据实际产品需求尺寸，制造模具，并且通过模具将合金金属块压铸成动力转向泵支架。
3.根据权利要求1所述的一种用于动力转向泵支架的合金铸造工艺，其特征在于：所述步骤四通过热电偶温度计记录样品温度随时间变化。
4.根据权利要求1所述的一种用于动力转向泵支架的合金铸造工艺，其特征在于：所述步骤五中对产品进行组织检验具体为，制备金相试样和透射电镜样品，并通过光学显微镜观察和扫描电子显微镜观察样品的组织表征和孔隙表征。
5.根据权利要求1所述的一种用于动力转向泵支架的合金铸造工艺，其特征在于：所述步骤五中性能检测具体为硬度测试和拉伸测试，硬度测试具体为将相对面角为一百三十六度的正四棱锥体以负荷压入被测材料表面，保持一定的时间，卸载后测量压痕对角线的长度，并通过一定公式计算其维氏硬度。
6.根据权利要求5所述的一种用于动力转向泵支架的合金铸造工艺，其特征在于：所述拉伸测试具体为利用图像采集器，拍摄变形前后待测物图像，经计算机系统运算后即可获得3D或2D全场位移和应变数据分布，并采用TescanMira3扫描电镜对所有拉伸测试后的样品断口进行观察分析。
CN202011269374.5A 2020-11-13 2020-11-13 一种用于动力转向泵支架的合金铸造工艺 Pending CN112553509A (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2944030A1 (fr) * 2009-04-02 2010-10-08 Peugeot Citroen Automobiles Sa Procede de traitement thermique et piece en alliage d'aluminium coulee sous-pression
CN106636788A (zh) * 2016-11-15 2017-05-10 扬州嵘泰工业发展有限公司 铝硅合金车身支架及其高压真空压铸制备方法
CN109763080A (zh) * 2019-03-25 2019-05-17 中北大学 一种压铸铝合金的熔炼低温固溶热处理方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2944030A1 (fr) * 2009-04-02 2010-10-08 Peugeot Citroen Automobiles Sa Procede de traitement thermique et piece en alliage d'aluminium coulee sous-pression
CN106636788A (zh) * 2016-11-15 2017-05-10 扬州嵘泰工业发展有限公司 铝硅合金车身支架及其高压真空压铸制备方法
CN109763080A (zh) * 2019-03-25 2019-05-17 中北大学 一种压铸铝合金的熔炼低温固溶热处理方法

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