CN110560638A - 一种耐高温浇铸***及其制备方法 - Google Patents

一种耐高温浇铸***及其制备方法 Download PDF

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CN110560638A
CN110560638A CN201910990928.1A CN201910990928A CN110560638A CN 110560638 A CN110560638 A CN 110560638A CN 201910990928 A CN201910990928 A CN 201910990928A CN 110560638 A CN110560638 A CN 110560638A
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CN110560638B (zh
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马国洪
马兆元
马兆祥
虞伟明
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马晨航
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Changzhou Wan Xing Paper Co Ltd
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Priority to DE112020004509.9T priority patent/DE112020004509T5/de
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Priority to PCT/CN2020/095492 priority patent/WO2021073129A1/zh
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Abstract

本发明属于铸造领域，具体涉及一种耐高温浇铸***及其制备方法。包括如下连接关系的浇铸元件：浇口杯和与所述浇口杯下端连接的竖浇道，竖浇道的另一端与过滤元件的一端连接，所述过滤元件的另一端与三通管连接，所述三通管两侧的开口与横浇道进口段的一端相连接，所述横浇道出口段的一端与变径弯管连接；所述浇铸元件，按重量百分比计，包括耐火纤维41‑51％；硅酸盐纤维40‑51％和粘结剂5‑19％。本发明的耐高温浇铸***，可以满足1500‑1750度的高温铁水顺利通过，耐高温性能优异，具有节能环保的特点。

Description

一种耐高温浇铸***及其制备方法
技术领域
本发明属于铸造领域，具体涉及一种耐高温浇铸***及其制备方法。
背景技术
铸造业是机械工业的基础产业，铸造在机械业中占有十分重要的地位，铸造技术是国民经济可持续发展的主体技术之一，是机械产品供给侧。据资料表明2015年我国现有铸造企业2.2万家，就为国民经济各部门提供2500万吨铸件。随着中国制造享誉国外，促使机械制造业蓬勃发展，铸造业的铸件体积大、质量重，形状复杂，技术要求高的产品，必须通过安装耐高温的浇铸元件来灌注高温铁水或高温钢水，才能保证产品质量，而浇铸元件需要长时间承受高温液态金属的流通，因此需要具备耐高温的性能。
目前，国内绝大部分的铸造企业都是釆用传统陶瓷耐火材料浇铸元件，该产品的承接方法为对接，容昜产生漏砂影响铸件产品的品质，漏砂严重时使之铸件产品报废，而且成本高，重量重，回收处理比较麻烦。
鉴于此，提出本发明。
发明内容
为了解决现有技术中存在的浇铸***的元件耐温度不高的问题，本发明在于提供一种耐高温浇铸***及其制备方法。
本发明是按照如下技术方案实现的：
一种耐高温浇铸***，包括如下连接关系的浇铸元件：浇口杯和与所述浇口杯下端连接的竖浇道，竖浇道的另一端与过滤元件的一端连接，所述过滤元件的另一端与三通管连接，所述三通管两侧的开口与横浇道进口段的一端相连接，所述横浇道出口段的一端与变径弯管连接；
所述过滤元件包括两个嵌合连接的过滤盒和一个过滤网，其中一个过滤盒与所述竖浇道连接，另一个过滤盒与所述三通管，所述过滤网设置在所述两个过滤盒的连接处，且所述过滤网正对所述竖浇道的通孔。
所述浇铸元件，按重量百分比计，包括如下组分：
耐火纤维 41-51％；
硅酸盐纤维 40-51％；
粘结剂 5-19％。
优选地，所述浇铸元件，按重量百分比计，包括如下组分：
耐火纤维 45％；
硅酸盐纤维 45％；
粘结剂 10％。
优选地，所述耐火纤维为纸质纤维、碳纤维和石棉以质量比(1-15)：(20-35)：(10-15)混合得到。
优选地，所述粘结剂为泡花碱、莫奈石、石墨和棕刚玉的混合物。
本发明的另一个目的在于提供所述耐高温浇铸***的制备方法，包括如下步骤：
(1)配料：将检验合格的耐火纤维、硅酸盐纤维和粘结剂按所述质量比加入搅拌机内进行搅拌，得到组合料；
(2)稀释：向上述组合料加入水进行稀释至质量浓度为千分之十，得到稀释浆；
(3)成型：将上述稀释浆由成型机进行成型，得到浇铸元件湿坯；
(4)干燥：将上述成型后的浇铸元件湿坯放入干燥室，经循环热风干燥后，蒸发脱水至含水率50-70％，得到浇铸元件毛坯；
(5)整形：将上述浇铸元件毛坯，放入整形机，进行热压整形；
(6)修边检验：去除上述整形后的浇铸元件毛坯的飞边，同时对产品逐件检验，组装成所述耐高温浇铸***。
本发明的有益效果：
(1)本发明制备的耐高温浇铸元件所用原料为纤维类制品，采用的纸质纤维、碳纤维和硅酸盐纤维以特定的比例和制备方法，使得制备的浇铸元件具有较优异的耐高温性能，用在浇铸***中时，可以满足1500-1750度的高温铁水顺利通过。
(2)本发明采用的粘结剂不添加有机树脂等组分，避免了有机树脂在高温的条件下易老化，和产生刺激有毒气体的缺点，而采用无污染耐高温的棕刚玉和石墨等无机材料，石墨可以增加浇铸元件的耐高温性能，同时棕刚玉导热系数小，对石墨具有隔热的作用，提高浇铸元件的保温性能；另一方面，棕刚玉又具有防止石墨氧化的功能，与泡花碱协同使用，既提高了粘结剂的粘结效果，增加浇铸元件的强度，又具有节能环保的特点，能够减少铸造厂废气和废渣90％以上；同时可以提高铸件的品质、提高铸件成品率5％-8％，为我国绿色铸造面向高质量发展而助力，作出更大的贡献。
附图说明
图1为本发明的耐高温浇铸***的示意图；
图2为本发明过滤元件的组装示意图；
其中，1-浇口杯；2-竖浇道；3-三通管；4-横浇道；5-弯管；6-过滤元件。
具体实施方式
下面将通过附图和具体实施例对本发明做进一步详细的说明。
如图1所示，一种耐高温浇铸***，包括如下连接关系的浇铸元件：浇口杯1和与所述浇口杯1下端连接的竖浇道2，竖浇道2的另一端与过滤元件6的一端连接，所述过滤元件6的另一端与三通管3连接，所述三通管3两侧的开口与横浇道4进口段的一端相连接，所述横浇道4出口段的一端与变径弯管5连接；
如图2所示，所述过滤元件6包括两个嵌合连接的过滤盒61和一个过滤网62，其中一个过滤盒61与所述竖浇道2连接，另一个过滤盒61与所述三通管3，所述过滤网62设置在所述两个过滤盒61的连接处，且所述过滤网62正对所述竖浇道2的通孔。
实施例1
(1)配料：将检验合格的耐火纤维、硅酸盐纤维和粘结剂按照质量比45％:45％:10％加入搅拌机内进行搅拌，得到组合料；
所述耐火纤维为纸质纤维、碳纤维和石棉以质量比10：25：10混合得到；
所述粘结剂为泡花碱60％、莫奈石10％、石墨5％和棕刚玉25％的混合物；
(2)稀释：向上述组合料加入水进行稀释至质量浓度为千分之十，得到稀释浆；
(3)成型：将上述稀释浆由浇口杯成型机进行成型，得到浇铸元件(浇口杯1)湿坯；
(4)干燥：将上述成型后的浇铸元件(浇口杯1)湿坯放入干燥室，经循环热风干燥后，蒸发脱水至含水率50-70％，得到浇铸元件(浇口杯1)毛坯；
(5)整形：将上述浇铸元件(浇口杯1)毛坯，放入整形机，进行热压整形；
(6)修边检验：去除上述整形后的浇铸元件(浇口杯1)毛坯的飞边，同时对产品逐件检验，检验合格的为成品浇铸元件(浇口杯1)。
其他浇铸元件：竖浇道2、三通管3、横浇道4、弯管5和过滤元件6采用相同的制备方法制备得到，且各浇铸元件的成品率提高5％-8％。
经测试，实施例1得到的各浇铸元件在用于本发明的耐高温浇铸***时，可以使1750度的铁水顺利通过。
实施例2
(1)配料：将检验合格的耐火纤维、硅酸盐纤维和粘结剂按照质量比41％:51％:8％加入搅拌机内进行搅拌，得到组合料；
所述耐火纤维为纸质纤维、碳纤维和石棉以质量比2：25：15混合得到；
所述粘结剂为泡花碱60％、莫奈石10％、石墨5％和棕刚玉25％的混合物；
(2)稀释：向上述组合料加入水进行稀释至质量浓度为千分之十，得到稀释浆；
(3)成型：将上述稀释浆由浇道管成型机进行成型，得到浇铸元件(浇口杯1)湿坯；
(4)干燥：将上述成型后的浇铸元件(浇口杯1)湿坯放入干燥室，经循环热风干燥后，蒸发脱水至含水率50-70％，得到浇铸元件(浇口杯1)毛坯；
(5)整形：将上述浇铸元件(浇口杯1)毛坯，放入整形机，进行热压整形；
(6)修边检验：去除上述整形后的浇铸元件(浇口杯1)毛坯的飞边，同时对产品逐件检验，检验合格的为成品浇铸元件(浇口杯1)。
其他浇铸元件：竖浇道2、三通管3、横浇道4、弯管5和过滤元件6采用相同的制备方法制备得到，且各浇铸元件的成品率提高5％-8％。
经测试，实施例2得到的各浇铸元件在用于本发明的耐高温浇铸***时，可以使1650度的铁水顺利通过。
对比例1
与实施例1的区别在于，将实施例1中粘结剂中的棕刚玉省略，其他组分的相对比例不变，制备方法同实施例1。
经测试，对比例1得到的各浇铸元件在用于本发明的耐高温浇铸***时，1500度的铁水通过时，即发生严重变形，耐高温性能不足。
对比例2
与实施例1的区别在于，将实施例1中粘结剂中的石墨省略，其他组分的相对比例不变，制备方法同实施例1。
经测试，对比例2得到的各浇铸元件在用于本发明的耐高温浇铸***时，1500度的铁水通过时，即发生严重变形，耐高温性能不足。
应当理解的是，对于本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (6)

1.一种耐高温浇铸***，其特征在于，包括如下连接关系的浇铸元件：浇口杯(1)和与所述浇口杯(1)下端连接的竖浇道(2)，竖浇道(2)的另一端与过滤元件(6)的一端连接，所述过滤元件(6)的另一端与三通管(3)连接，所述三通管(3)两侧的开口与横浇道(4)进口段的一端相连接，所述横浇道(4)出口段的一端与变径弯管(5)连接；
所述浇铸元件，按重量百分比计，包括如下组分：
耐火纤维 41-51％；
硅酸盐纤维 40-51％；
粘结剂 5-19％。
2.根据权利要求1所述的一种耐高温浇铸***，其特征在于，所述过滤元件(6)包括两个嵌合连接的过滤盒(61)和一个过滤网(62)，其中一个过滤盒(61)与所述竖浇道(2)连接，另一个过滤盒(61)与所述三通管(3)，所述过滤网(62)设置在所述两个过滤盒(61)的连接处，且所述过滤网(62)正对所述竖浇道(2)的通孔。
3.根据权利要求1所述的一种耐高温浇铸***，其特征在于，所述浇铸元件，按重量百分比计，包括如下组分：
耐火纤维 45％；
硅酸盐纤维 45％；
粘结剂 10％。
4.根据权利要求1或2所述的一种耐高温浇铸***，其特征在于，所述耐火纤维为纸质纤维、碳纤维和石棉以质量比(1-15)：(20-35)：(10-15)混合得到。
5.根据权利要求1所述的一种耐高温浇铸***，其特征在于，所述粘结剂为泡花碱、莫奈石、石墨和棕刚玉的混合物。
6.一种如权利要求1～5任一项所述的耐高温浇铸***的制备方法，其特征在于，包括如下步骤：
(1)配料：将检验合格的耐火纤维、硅酸盐纤维和粘结剂按所述质量比加入搅拌机内进行搅拌，得到组合料；
(2)稀释：向上述组合料加入水进行稀释至质量浓度为千分之十，得到稀释浆；
(3)成型：将上述稀释浆由成型机进行成型，得到浇铸元件湿坯；
(4)干燥：将上述成型后的浇铸元件湿坯放入干燥室，经循环热风干燥后，蒸发脱水至含水率50-70％，得到浇铸元件毛坯；
(5)整形：将上述浇铸元件毛坯，放入整形机，进行热压整形；
(6)修边检验：去除上述整形后的浇铸元件毛坯的飞边，同时对产品逐件检验，组装成所述耐高温浇铸***。
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