CN105728636B - 一种耐高温模具及其制造方法 - Google Patents

一种耐高温模具及其制造方法 Download PDF

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CN105728636B
CN105728636B CN201610131048.5A CN201610131048A CN105728636B CN 105728636 B CN105728636 B CN 105728636B CN 201610131048 A CN201610131048 A CN 201610131048A CN 105728636 B CN105728636 B CN 105728636B
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mould
adhesive
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raw material
temperature resistance
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CN105728636A (zh
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梁清华
王育正
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Dongguan Yeong Automobile Accessories Co., Ltd.
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2206Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2206Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/2213Polyalkenes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C1/00Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B22C1/2206Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • B22C1/222Polyacrylates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings

Abstract

一种耐高温模具及其制造方法,涉及铸件技术领域,通过凹凸棒黏土18‑25%、石灰石砂35‑40%、煤矸石30‑35%、粘合剂3‑5%、隔热剂3‑5%,按照粉碎过筛、加热烘炒、冷却、混合、制坯烧结、冷却成型工艺制成,解决现有技术生产出的模具耐高温度不够,导致后期在进行铸件生产过程中,模具容易出现熔化或者软化,造成生产出的铸件质量不合格的问题,该模具延长了使用寿命,提高了铸件的生产效率和生产质量,大大提高了企业经济效益。

Description

一种耐高温模具及其制造方法
技术领域:
本发明涉及铸件技术领域,具体涉及一种耐高温模具及其制造方法。
背景技术:
在铸件生产时,模具的好坏直接影响到后期铸件的质量,传统的模具生产时由于配方以及工艺问题,生产出的模具耐高温度不够,导致后期在进行铸件生产过程中,模具容易出现熔化或者软化的问题,造成生产出的铸件质量不合格,而且模具损坏,拖延生产进度。
发明内容:
本发明所要解决的技术问题在于克服现有的技术缺陷,提供一种耐高温模具及其制造方法,解决现有技术生产出的模具耐高温度不够,导致后期在进行铸件生产过程中,模具容易出现熔化或者软化,造成生产出的铸件质量不合格的问题,该模具延长了使用寿命,提高了铸件的生产效率和生产质量,大大提高了企业经济效益。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种耐高温模具,其特征在于通过以下重量份的原料制成:
凹凸棒黏土18-25%、石灰石砂35-40%、煤矸石30-35%、粘合剂3-5%、隔热剂3-5%;
优选的,通过以下重量份的原料制成,凹凸棒黏土20%、石灰石砂40%、煤矸石30%、粘合剂5%、隔热剂5%;
较佳的,通过以下重量份的原料制成,凹凸棒黏土25%、石灰石砂35%、煤矸石35%、粘合剂3%、隔热剂2%。
所述粘合剂为聚苯乙烯、聚丙烯酸酯、乙烯-醋酸乙烯共聚物的一种或几种的混合物,高温加热熔化后粘合效果好,制成的模具粘合度高,使用寿命较长。
所述隔热剂为碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅的一种或几种的混合物,通过隔热剂,增加模具的耐高温效果,解决传统模具耐高温度不够,质量较低,导致后期在进行铸件生产过程中,模具容易出现熔化或者软化,造成生产出的铸件质量不合格的问题。
一种耐高温模具的制造方法,其特征在于,将上述重量份的原料,通过以下步骤制得:
1)粉碎过筛:将凹凸棒黏土、石灰石砂和煤矸石通过粉碎机粉碎后,过筛除杂后得到混合料备用;
2)加热烘炒:将上述混合料通过烘炒机加热烘炒,加温度设置在230-280℃,烘炒时间2-3个小时,得到熟料备用;
3)冷却:将上述熟料通过超低温冷却,得到冻干粉备用;
4)混合:将上述冻干粉放入搅拌釜混合搅拌,加入粘合剂、隔热剂和水,水与原料的重量比为2:1,密封加热搅拌混合,加热温度为180-230℃,加热搅拌时间为1-2小时,制得混合浆料;
5)制坯烧结:将上述混合浆料倒入母模,得到模坯,高温烧结制得模具半成品;
6)冷却成型:模具半成品冷却成型后,即制得成品模具。
本发明的有益效果为:提供一种耐高温模具及其制造方法,解决现有技术生产出的模具耐高温度不够,导致后期在进行铸件生产过程中,模具容易出现熔化或者软化,造成生产出的铸件质量不合格的问题,根据本发明提供的方法,通过粉碎过筛,除去原料内的杂质,得到精纯的混合原料,通过加热烘,使得原料内部成分相互混合反应,通过超低温冷却,密封加热搅拌混合,使得原料之间成分相互融合的较为彻底,同时粘合剂与隔热剂与其他原料之间彻底结合,最终烧结、制坯、冷却得到成品模具,使得成品的模具有结构紧密、耐高温的特性,该模具延长了使用寿命,提高了铸件的生产效率和生产质量,大大提高了企业经济效益。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例一
一种耐高温模具,通过以下重量份的原料制成,凹凸棒黏土20%、石灰石砂40%、煤矸石30%、粘合剂5%、隔热剂5%。
所述粘合剂为聚苯乙烯、聚丙烯酸酯、乙烯-醋酸乙烯共聚物的一种或几种的混合物。
所述隔热剂为碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅的一种或几种的混合物。
一种耐高温模具的制造方法,将上述重量份的原料,通过以下步骤制得:
1)粉碎过筛:将凹凸棒黏土、石灰石砂和煤矸石通过粉碎机粉碎后,过筛除杂后得到混合料备用;
2)加热烘炒:将上述混合料通过烘炒机加热烘炒,加温度设置在230-280℃,烘炒时间2-3个小时,得到熟料备用;
3)冷却:将上述熟料通过超低温冷却,得到冻干粉备用;
4)混合:将上述冻干粉放入搅拌釜混合搅拌,加入粘合剂、隔热剂和水,水与原料的重量比为2:1,密封加热搅拌混合,加热温度为180-230℃,加热搅拌时间为1-2小时,制得混合浆料;
5)制坯烧结:将上述混合浆料倒入母模,得到模坯,高温烧结制得模具半成品;
6)冷却成型:模具半成品冷却成型后,即制得成品模具。
实施例二
一种耐高温模具,通过以下重量份的原料制成,凹凸棒黏土25%、石灰石砂35%、煤矸石35%、粘合剂3%、隔热剂2%。
所述粘合剂为聚苯乙烯、聚丙烯酸酯、乙烯-醋酸乙烯共聚物的一种或几种的混合物。
所述隔热剂为碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅的一种或几种的混合物。
一种耐高温模具的制造方法,将上述重量份的原料,通过以下步骤制得:
1)粉碎过筛:将凹凸棒黏土、石灰石砂和煤矸石通过粉碎机粉碎后,过筛除杂后得到混合料备用;
2)加热烘炒:将上述混合料通过烘炒机加热烘炒,加温度设置在230-280℃,烘炒时间2-3个小时,得到熟料备用;
3)冷却:将上述熟料通过超低温冷却,得到冻干粉备用;
4)混合:将上述冻干粉放入搅拌釜混合搅拌,加入粘合剂、隔热剂和水,水与原料的重量比为2:1,密封加热搅拌混合,加热温度为180-230℃,加热搅拌时间为1-2小时,制得混合浆料;
5)制坯烧结:将上述混合浆料倒入母模,得到模坯,高温烧结制得模具半成品;
6)冷却成型:模具半成品冷却成型后,即制得成品模具。
实施例三
一种耐高温模具,通过以下重量份的原料制成,凹凸棒黏土18%、石灰石砂40%、煤矸石35%、粘合剂3%、隔热剂5%制成。
所述粘合剂为聚苯乙烯、聚丙烯酸酯、乙烯-醋酸乙烯共聚物的一种或几种的混合物。
所述隔热剂为碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅的一种或几种的混合物。
一种耐高温模具的制造方法,将上述重量份的原料,通过以下步骤制得:
1)粉碎过筛:将凹凸棒黏土、石灰石砂和煤矸石通过粉碎机粉碎后,过筛除杂后得到混合料备用;
2)加热烘炒:将上述混合料通过烘炒机加热烘炒,加温度设置在230-280℃,烘炒时间2-3个小时,得到熟料备用;
3)冷却:将上述熟料通过超低温冷却,得到冻干粉备用;
4)混合:将上述冻干粉放入搅拌釜混合搅拌,加入粘合剂、隔热剂和水,水与原料的重量比为2:1,密封加热搅拌混合,加热温度为180-230℃,加热搅拌时间为1-2小时,制得混合浆料;
5)制坯烧结:将上述混合浆料倒入母模,得到模坯,高温烧结制得模具半成品;
6)冷却成型:模具半成品冷却成型后,即制得成品模具。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (3)

1.一种耐高温模具,其特征在于通过以下重量百分比的原料制成:凹凸棒黏土18-25%、石灰石砂35-40%、煤矸石30-35%、粘合剂3-5%、隔热剂3-5%;
所述粘合剂为聚苯乙烯、聚丙烯酸酯、乙烯-醋酸乙烯共聚物的一种或几种的混合物;
所述隔热剂为碳化硼、碳化硅、氮化硼、氮化硅、磷化硼、磷化硅的一种或几种的混合物;
上述耐高温模具的制造方法如下:
(1)粉碎过筛:将凹凸棒黏土、石灰石砂和煤矸石通过粉碎机粉碎后,过筛除杂后得到混合料备用;
(2)加热烘炒:将上述混合料通过烘炒机加热烘炒,加温温度设置在230-280℃,烘炒时间2-3个小时,得到熟料备用;
(3)冷却:将上述熟料通过超低温冷却,得到冻干粉备用;
(4)混合:将上述冻干粉放入搅拌釜混合搅拌,加入粘合剂、隔热剂和水,水与原料的重量比为2:1,密封加热搅拌混合,加热温度为180-230℃,加热搅拌时间为1-2小时,制得混合浆料;
(5)制坯烧结:将上述混合浆料倒入母模,得到模坯,高温烧结制得模具半成品;
(6)冷却成型:模具半成品冷却成型后,即制得成品模具。
2.根据权利要求1所述的一种耐高温模具,其特征在于,通过以下重量百分比的原料制成,凹凸棒黏土20%、石灰石砂40%、煤矸石30%、粘合剂5%、隔热剂5%。
3.根据权利要求1所述的一种耐高温模具,其特征在于,通过以下重量百分比的原料制成,凹凸棒黏土25%、石灰石砂35%、煤矸石35%、粘合剂3%、隔热剂2%。
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