CN107841600A - 一种用于室外防锈阀门加工工艺 - Google Patents

一种用于室外防锈阀门加工工艺 Download PDF

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CN107841600A
CN107841600A CN201711123037.3A CN201711123037A CN107841600A CN 107841600 A CN107841600 A CN 107841600A CN 201711123037 A CN201711123037 A CN 201711123037A CN 107841600 A CN107841600 A CN 107841600A
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Abstract

本发明涉及一种用于室外防锈阀门加工工艺,具体包括以下步骤:(1)制备阀体;(2)一次渗碳、二次渗碳;(3)淬火;(4)一次回火、二次回火:(5)涂覆防锈层,本发明能够提高其防锈蚀能力,提高其使用的寿命。

Description

一种用于室外防锈阀门加工工艺
技术领域
本发明涉及一种用于室外防锈阀门加工工艺。
背景技术
阀门运用在很多生产系统中,有些生产系统是在室外,因此阀门长期处于室外中,长时间受到雨水,高温等复杂天气的影响,其表面会迅速产生锈蚀氧化,严重影响其强度,抗氧化能力差,寿命短,增加成本维护。
发明内容
本发明要解决的技术问题是,针对现有技术不足,提出一种用于室外防锈阀门加工工艺。
本发明为解决上述技术问题提出的技术方案是:一种用于室外防锈阀门加工工艺,具体包括以下步骤:
(一)、制备阀体:
a、将阀门成分放置在熔炼炉中,熔炼成金属溶液,并在溶液表面撒入除渣剂,打渣两遍,打渣完成后,形成待铸造的金属溶液;
b、制作模具:根据阀门的形状制作木模,木模上设置有冒口和浇口;
c、型砂造型:在木模周围用型砂制作砂型,取出木模,在砂型内涂一层耐高温涂料;
d、浇注:往砂型中浇注金属溶液,浇注温度为 1200-1230℃,时间为20-30s;
e、冷却:自然冷却后,清理阀门表面,切除浇口、冒口、铲磨毛刺和披缝等凸出物,再次清理残砂,即可得到阀门;
(二)渗碳:
a、一次渗碳,将阀门置于加热炉内,温度升到850-890℃渗碳,渗碳时间2-3h,然后采用风冷以15-20℃/s的冷却速率将工件加速冷却至室温;
b、二次渗碳,将阀门置于加热炉内,温度升到900-920℃渗碳,,渗碳时间1.5-2h,然后采用水冷将二次渗碳后的阀门以15-20℃/s的冷却速率冷却至室温;
(三)淬火:将经二次渗碳处理后的工件放入井式天然气加热炉内,对阀门进行淬火加热处理,淬火温度为700-730℃,保温时间为2-3h,然后采用雾状的淬火液以5-10℃/s的冷却速率将工件冷至室温;
(四)、回火:
a、一次回火:将阀门加热至250-270℃,然后放入回火炉进行回火,控制回火温度为600-620℃,回火时间1.5-2h,然后采用压缩空气以8-10℃/s的冷却速率将原料冷至200-220℃,然后空冷至室温;
b、二次回火:将阀门加热到200-250℃,再次放入回火炉进行二次回火,控制回火温度为430-450℃,回火时间1-1.5h,然后空冷至室温;
(五)、涂覆防锈层:
a、防锈层制备:防锈层按质量份数计包括以下组分:环氧树脂:15-20份,醋酸乙烯:8-10份,乙基纤维素:5-7份,钇系稀土微粉:11-13份,聚醚硅酸酯:5-6份,磷酸二氢钾:4-6份,尿素:2-3份,陶瓷微粉:7-9份,烷基醇酰胺:3-5份,乙二醇:2-3份,十二烷基苯磺酸钠:5-6份,过硫酸铵:2-4份,α-亚麻酸:2-3份,丙二醇:3-6份,防锈助剂:1-3份,六偏磷酸钠:6-8份,叔碳酸乙烯酯:10-13份,氢化丁氰胶:8-11 份;偶联剂:3-5份,
将上述组分混合在一起,以300-400r/min搅拌2-3h,然后加入到反应釜中,温度升至75-82℃,以100-120r/min继续搅拌20-30min,并且保温30-40min,然后继续将温度升至95-98℃,保温20-25min,然后冷却至室温,备用;
b、将a制得的防锈涂料送至研磨机中进行研磨,过筛备用;
c、在阀门表面喷涂界面剂,然后通过喷枪将研磨成粉的防锈涂料喷涂在阀门表面上;
d、在防锈层表面喷涂纳米材料溶液,然后送至烘箱烘干,温度为50-60℃。
上述技术方案的改进是:前述的防锈层按质量份数计包括以下组分:环氧树脂:17份,醋酸乙烯:8份,乙基纤维素:5份,钇系稀土微粉:11份,聚醚硅酸酯:5份,磷酸二氢钾:4份,尿素:2份,陶瓷微粉:7份,烷基醇酰胺:3份,乙二醇:2份,十二烷基苯磺酸钠:5份,过硫酸铵:2份,α-亚麻酸:2份,丙二醇:4份,防锈助剂:2份,六偏磷酸钠:6份,叔碳酸乙烯酯:10份,氢化丁氰胶:9 份;偶联剂:4份。
上述技术方案的改进是:前述的防锈层按质量份数计包括以下组分:环氧树脂:20份,醋酸乙烯:9份,乙基纤维素:6份,钇系稀土微粉:12份,聚醚硅酸酯:6份,磷酸二氢钾:6份,尿素:3份,陶瓷微粉:8份,烷基醇酰胺:4份,乙二醇:3份,十二烷基苯磺酸钠:6份,过硫酸铵:3份,α-亚麻酸:3份,丙二醇:5份,防锈助剂:3份,六偏磷酸钠:8份,叔碳酸乙烯酯:11份,氢化丁氰胶:10 份;偶联剂:5份。
本发明采用上述技术方案的有益效果是:
(1)本发明的采用了两次渗碳并且缩短了每次渗碳的时间,能够有效防止长时间加热导致的金属硬度偏低,降低抗疲劳性能和耐磨性能,大大延长了工件使用寿命;
(3)本发明采用了一次淬火和两次回火的配合,能够很好的使工件释放其中的残余应力,使过冷奥氏体进行马氏体或贝氏体转变,不仅延长使用寿命,也大幅提强度、硬度、耐磨性、疲劳强度以及韧性;
本发明在阀门表面涂有一层防锈层,能够提高其防锈蚀能力,提高其使用的寿命,在阀门表面喷涂界面剂,可以密闭掉外表面上的微小气孔,同时增加涂料的与阀门外表面的粘贴强度,在防锈层表面喷涂纳米材料溶液,能够提高其耐磨损性,同时具有良好的、防腐蚀性、防霉杀菌和防污性。
具体实施方式
实施例1
本实施例的一种用于室外防锈阀门加工工艺,具体包括以下步骤:
(一)、制备阀体:
a、将阀门成分放置在熔炼炉中,熔炼成金属溶液,并在溶液表面撒入除渣剂,打渣两遍,打渣完成后,形成待铸造的金属溶液;
b、制作模具:根据阀门的形状制作木模,木模上设置有冒口和浇口;
c、型砂造型:在木模周围用型砂制作砂型,取出木模,在砂型内涂一层耐高温涂料;
d、浇注:往砂型中浇注金属溶液,浇注温度为 1220℃,时间为25s;
e、冷却:自然冷却后,清理阀门表面,切除浇口、冒口、铲磨毛刺和披缝等凸出物,再次清理残砂,即可得到阀门;
(二)渗碳:
a、一次渗碳,将阀门置于加热炉内,温度升到860℃渗碳,渗碳时间2.5h,然后采用风冷以18℃/s的冷却速率将工件加速冷却至室温;
b、二次渗碳,将阀门置于加热炉内,温度升到905℃渗碳,,渗碳时间2h,然后采用水冷将二次渗碳后的阀门以17℃/s的冷却速率冷却至室温;
(三)淬火:将经二次渗碳处理后的工件放入井式天然气加热炉内,对阀门进行淬火加热处理,淬火温度为710℃,保温时间为3h,然后采用雾状的淬火液以8℃/s的冷却速率将工件冷至室温;
(四)、回火:
a、一次回火:将阀门加热至260℃,然后放入回火炉进行回火,控制回火温度为610℃,回火时间1.5h,然后采用压缩空气以8℃/s的冷却速率将原料冷至220℃,然后空冷至室温;
b、二次回火:将阀门加热到240℃,再次放入回火炉进行二次回火,控制回火温度为445℃,回火时间1h,然后空冷至室温;
(五)、涂覆防锈层:
a、防锈层制备:防锈层按质量份数计包括以下组分:环氧树脂:17份,醋酸乙烯:8份,乙基纤维素:5份,钇系稀土微粉:11份,聚醚硅酸酯:5份,磷酸二氢钾:4份,尿素:2份,陶瓷微粉:7份,烷基醇酰胺:3份,乙二醇:2份,十二烷基苯磺酸钠:5份,过硫酸铵:2份,α-亚麻酸:2份,丙二醇:4份,防锈助剂:2份,六偏磷酸钠:6份,叔碳酸乙烯酯:10份,氢化丁氰胶:9 份;偶联剂:4份,
将上述组分混合在一起,以360r/min搅拌2.5h,然后加入到反应釜中,温度升至78℃,以100r/min继续搅拌30min,并且保温35min,然后继续将温度升至96℃,保温23min,然后冷却至室温,备用;
b、将a制得的防锈涂料送至研磨机中进行研磨,过筛备用;
c、在阀门表面喷涂界面剂,然后通过喷枪将研磨成粉的防锈涂料喷涂在阀门表面上;
d、在防锈层表面喷涂纳米材料溶液,然后送至烘箱烘干,温度为53℃。
实施例2
本实施例一种用于室外防锈阀门加工工艺,具体包括以下步骤:
(一)、制备阀体:
a、将阀门成分放置在熔炼炉中,熔炼成金属溶液,并在溶液表面撒入除渣剂,打渣两遍,打渣完成后,形成待铸造的金属溶液;
b、制作模具:根据阀门的形状制作木模,木模上设置有冒口和浇口;
c、型砂造型:在木模周围用型砂制作砂型,取出木模,在砂型内涂一层耐高温涂料;
d、浇注:往砂型中浇注金属溶液,浇注温度为 1200℃,时间为30s;
e、冷却:自然冷却后,清理阀门表面,切除浇口、冒口、铲磨毛刺和披缝等凸出物,再次清理残砂,即可得到阀门;
(二)渗碳:
a、一次渗碳,将阀门置于加热炉内,温度升到870℃渗碳,渗碳时间2h,然后采用风冷以20℃/s的冷却速率将工件加速冷却至室温;
b、二次渗碳,将阀门置于加热炉内,温度升到915℃渗碳,,渗碳时间1.5h,然后采用水冷将二次渗碳后的阀门以20℃/s的冷却速率冷却至室温;
(三)淬火:将经二次渗碳处理后的工件放入井式天然气加热炉内,对阀门进行淬火加热处理,淬火温度为730℃,保温时间为2h,然后采用雾状的淬火液以10℃/s的冷却速率将工件冷至室温;
(四)、回火:
a、一次回火:将阀门加热至270℃,然后放入回火炉进行回火,控制回火温度为620℃,回火时间1.5h,然后采用压缩空气以10℃/s的冷却速率将原料冷至200℃,然后空冷至室温;
b、二次回火:将阀门加热到250℃,再次放入回火炉进行二次回火,控制回火温度为450℃,回火时间1h,然后空冷至室温;
(五)、涂覆防锈层:
a、防锈层制备:防锈层按质量份数计包括以下组分:环氧树脂:20份,醋酸乙烯:9份,乙基纤维素:6份,钇系稀土微粉:12份,聚醚硅酸酯:6份,磷酸二氢钾:6份,尿素:3份,陶瓷微粉:8份,烷基醇酰胺:4份,乙二醇:3份,十二烷基苯磺酸钠:6份,过硫酸铵:3份,α-亚麻酸:3份,丙二醇:5份,防锈助剂:3份,六偏磷酸钠:8份,叔碳酸乙烯酯:11份,氢化丁氰胶:10 份;偶联剂:5份,
将上述组分混合在一起,以400r/min搅拌2h,然后加入到反应釜中,温度升至80℃,以120r/min继续搅拌20min,并且保温33min,然后继续将温度升至98℃,保温20min,然后冷却至室温,备用;
b、将a制得的防锈涂料送至研磨机中进行研磨,过筛备用;
c、在阀门表面喷涂界面剂,然后通过喷枪将研磨成粉的防锈涂料喷涂在阀门表面上;
d、在防锈层表面喷涂纳米材料溶液,然后送至烘箱烘干,温度为55℃。
本发明不局限于上述实施例。凡采用等同替换形成的技术方案,均落在本发明要求的保护范围。

Claims (3)

1.一种用于室外防锈阀门加工工艺,其特征在于:具体包括以下步骤:
(一)、制备阀体:
a、将阀门成分放置在熔炼炉中,熔炼成金属溶液,并在溶液表面撒入除渣剂,打渣两遍,打渣完成后,形成待铸造的金属溶液;
b、制作模具:根据阀门的形状制作木模,木模上设置有冒口和浇口;
c、型砂造型:在木模周围用型砂制作砂型,取出木模,在砂型内涂一层耐高温涂料;
d、浇注:往砂型中浇注金属溶液,浇注温度为 1200-1230℃,时间为20-30s;
e、冷却:自然冷却后,清理阀门表面,切除浇口、冒口、铲磨毛刺和披缝等凸出物,再次清理残砂,即可得到阀门;
(二)渗碳:
a、一次渗碳,将阀门置于加热炉内,温度升到850-890℃渗碳,渗碳时间2-3h,然后采用风冷以15-20℃/s的冷却速率将工件加速冷却至室温;
b、二次渗碳,将阀门置于加热炉内,温度升到900-920℃渗碳,,渗碳时间1.5-2h,然后采用水冷将二次渗碳后的阀门以15-20℃/s的冷却速率冷却至室温;
(三)淬火:将经二次渗碳处理后的工件放入井式天然气加热炉内,对阀门进行淬火加热处理,淬火温度为700-730℃,保温时间为2-3h,然后采用雾状的淬火液以5-10℃/s的冷却速率将工件冷至室温;
(四)、回火:
a、一次回火:将阀门加热至250-270℃,然后放入回火炉进行回火,控制回火温度为600-620℃,回火时间1.5-2h,然后采用压缩空气以8-10℃/s的冷却速率将原料冷至200-220℃,然后空冷至室温;
b、二次回火:将阀门加热到200-250℃,再次放入回火炉进行二次回火,控制回火温度为430-450℃,回火时间1-1.5h,然后空冷至室温;
(五)、涂覆防锈层:
a、防锈层制备:防锈层按质量份数计包括以下组分:环氧树脂:15-20份,醋酸乙烯:8-10份,乙基纤维素:5-7份,钇系稀土微粉:11-13份,聚醚硅酸酯:5-6份,磷酸二氢钾:4-6份,尿素:2-3份,陶瓷微粉:7-9份,烷基醇酰胺:3-5份,乙二醇:2-3份,十二烷基苯磺酸钠:5-6份,过硫酸铵:2-4份,α-亚麻酸:2-3份,丙二醇:3-6份,防锈助剂:1-3份,六偏磷酸钠:6-8份,叔碳酸乙烯酯:10-13份,氢化丁氰胶:8-11 份;偶联剂:3-5份,
将上述组分混合在一起,以300-400r/min搅拌2-3h,然后加入到反应釜中,温度升至75-82℃,以100-120r/min继续搅拌20-30min,并且保温30-40min,然后继续将温度升至95-98℃,保温20-25min,然后冷却至室温,备用;
b、将a制得的防锈涂料送至研磨机中进行研磨,过筛备用;
c、在阀门表面喷涂界面剂,然后通过喷枪将研磨成粉的防锈涂料喷涂在阀门表面上;
d、在防锈层表面喷涂纳米材料溶液,然后送至烘箱烘干,温度为50-60℃。
2.根据权利要求1所述的用于室外防锈阀门加工工艺,其特征在于:所述防锈层按质量份数计包括以下组分:环氧树脂:17份,醋酸乙烯:8份,乙基纤维素:5份,钇系稀土微粉:11份,聚醚硅酸酯:5份,磷酸二氢钾:4份,尿素:2份,陶瓷微粉:7份,烷基醇酰胺:3份,乙二醇:2份,十二烷基苯磺酸钠:5份,过硫酸铵:2份,α-亚麻酸:2份,丙二醇:4份,防锈助剂:2份,六偏磷酸钠:6份,叔碳酸乙烯酯:10份,氢化丁氰胶:9 份;偶联剂:4份。
3.根据权利要求2所述的用于室外防锈阀门加工工艺,其特征在于:所述防锈层按质量份数计包括以下组分:环氧树脂:20份,醋酸乙烯:9份,乙基纤维素:6份,钇系稀土微粉:12份,聚醚硅酸酯:6份,磷酸二氢钾:6份,尿素:3份,陶瓷微粉:8份,烷基醇酰胺:4份,乙二醇:3份,十二烷基苯磺酸钠:6份,过硫酸铵:3份,α-亚麻酸:3份,丙二醇:5份,防锈助剂:3份,六偏磷酸钠:8份,叔碳酸乙烯酯:11份,氢化丁氰胶:10 份;偶联剂:5份。
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