CN116237380A - 一种用于紧固件行业的新型磷化生产成品铁丝工艺 - Google Patents
一种用于紧固件行业的新型磷化生产成品铁丝工艺 Download PDFInfo
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Abstract
本发明公开了一种用于紧固件行业的新型磷化生产成品铁丝工艺，包括六连直进式拉丝机拉丝、球化退火炉退火、磷化、皂化、精抽机拉丝等工艺。其有益效果是：本发明改进了退火工艺，阶梯式降温同时48小时降温至280℃以下出炉，可以使铁丝表面无氧化层，同时具有合适的软硬度，可以直接进行磷化；省去了酸洗工艺，可以在无氧化层的基础上直接做磷化层，再进行皂化提升了铁丝表面的光滑度，大大提高产品韧性。
Description
技术领域
本发明涉及铁丝生产技术领域，具体为一种用于紧固件行业的新型磷化生产成品铁丝工艺。
背景技术
铁丝是钢铁线材的再一次冷加工产品，所用材料一般选用优碳钢或不锈钢。通常要经过盘元剥壳、酸洗、水洗、皂化、烘干、拉拔、退火、冷却、酸洗、水洗、上镀锌线、包装等若干程序。现有的铁丝生产在退火处理后，往往会在表面形成氧化层，需要对铁丝进行酸化处理来去除表面氧化层，但是酸化处理会导致表面留有残酸，难以清理，进而导致铁丝容易生锈，降低使用寿命。
发明内容
本发明的目的在于提供一种用于紧固件行业的新型磷化生产成品铁丝工艺，以解决上述背景技术中提出的问题。
为实现上述目的，本发明提供如下技术方案，包括如下步骤：
步骤一，将低碳钢送入六连直进式拉丝机拉丝；选用6.5的盘条，且一个磨合使用两个模具，两个模具间隔10mm设置，一个为6.9的模具，一个为5.6的模具；
步骤二，将拉丝机得到的产品送至球化退火炉中进行退火；在600℃的环境下保温30min，然后升温至680℃后保温30min，再升温至730℃后保温480min；之后控制球化退火炉开始降温，先240min降至700℃，再120min降至680
℃，在680℃的环境下保温120min，然后再120min降至660℃，在660℃的环境下保温60min；最后开启冷却风机降温至280℃以下出炉；
步骤三，将退火之后的产品磷化；向铁槽内加入60％的水，蒸汽加热至60℃后，再向水槽内加入40％的磷化液后，再用蒸汽升温至80℃；将铁丝放入磷化槽磷化，5min后从磷化槽中吊出放入清水池内漂洗一分钟，在吊出放入皂化池浸泡3分钟后取出；
步骤四，将磷化完成的铁丝送入单台精抽机拉丝，即可得到成品。
作为本发明的一种优选技术方案，所述低碳钢为SWRCH22A、Q195L、Q235L、ML08AL其中之一。
作为本发明的一种优选技术方案，所述步骤一中配磨明细为5.6-4.9-4.2-3.7-3.2-2.8。
与现有技术相比，本发明的有益效果是：本发明改进了退火工艺，阶梯式降温同时48小时降温至280℃以下出炉，可以使铁丝表面无氧化层，同时具有合适的软硬度，可以直接进行磷化；省去了酸洗工艺，可以在无氧化层的基础上直接做磷化层，再进行皂化提升了铁丝表面的光滑度，大大提高产品韧性。
附图说明
图1为本发明测试数据图；
具体实施方式
实施例1
如图1所示，本发明公开了一种用于紧固件行业的新型磷化生产成品铁丝工艺，包括如下步骤：
步骤一，将低碳钢送入六连直进式拉丝机拉丝；拉丝机选用6.5的盘条，且一个磨合使用两个模具，两个模具间隔10mm设置，一个为6.9的模具，一个为5.6的模具；
步骤二，将拉丝机得到的产品送至球化退火炉中进行退火；在600℃的环境下保温30min，然后升温至680℃后保温30min，再升温至730℃后保温480min；之后控制球化退火炉开始降温，先240min降至700℃，再120min降至680
℃，在680℃的环境下保温120min，然后再120min降至660℃，在660℃的环境下保温60min；最后开启冷却风机降温至280℃以下出炉；
步骤三，将退火之后的产品磷化；向铁槽内加入60％的水，蒸汽加热至60℃后，再向水槽内加入40％的磷化液后，再用蒸汽升温至80℃；将铁丝放入磷化槽磷化，5min后从磷化槽中吊出放入清水池内漂洗一分钟，在吊出放入皂化池浸泡3分钟后取出；
步骤四，将磷化完成的铁丝送入单台精抽机拉丝，即可得到成品。
本实施例在实际加工时，低碳钢选用Q235L，步骤一种配磨明细为5.6-4.9-4.2-3.7-3.2-2.8，将单台精抽机得到的成品精金相机、硬度机检测，检测结果金相脱碳层半脱15丝左右，硬度检测HV160-180左右，符合标准。本发明通过改进了退火工艺，采用阶梯式降温同时48小时降温至280℃以下出炉，可以使铁丝表面无氧化层，同时具有合适的软硬度，可以直接进行磷化；省去了酸洗工艺，可以在无氧化层的基础上直接做磷化层，再进行皂化提升了铁丝表面的光滑度，大大提高产品韧性。
上述虽然对本发明的具体实施例作了详细说明，但是本发明并不限于上述实施例，在本领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下做出各种变化，而不具备创造性劳动的修改或变形仍在本发明的保护范围以内。
Claims (3)
1.一种用于紧固件行业的新型磷化生产成品铁丝工艺，其特征在于，包括如下步骤：
步骤一，将低碳钢送入六连直进式拉丝机拉丝；拉丝机选用6.5的盘条，且一个磨合使用两个模具，两个模具间隔10mm设置，一个为6.9的模具，一个为5.6的模具；
步骤二，将拉丝机得到的产品送至球化退火炉中进行退火；在600℃的环境下保温30min，然后升温至680℃后保温30min，再升温至730℃后保温480min；之后控制球化退火炉开始降温，先240min降至700℃，再120min降至680
℃，在680℃的环境下保温120min，然后再120min降至660℃，在660℃的环境下保温60min；最后开启冷却风机降温至280℃以下出炉；
步骤三，将退火之后的产品磷化；向铁槽内加入60％的水，蒸汽加热至60℃后，再向水槽内加入40％的磷化液后，再用蒸汽升温至80℃；将铁丝放入磷化槽磷化，5min后从磷化槽中吊出放入清水池内漂洗一分钟，在吊出放入皂化池浸泡3分钟后取出；
步骤四，将磷化完成的铁丝送入单台精抽机拉丝，即可得到成品。
2.根据权利要求1所述的一种用于紧固件行业的新型磷化生产成品铁丝工艺，其特征在于：所述低碳钢为SWRCH22A、Q195L、Q235L、ML08AL其中之一。
3.根据权利要求1所述的一种用于紧固件行业的新型磷化生产成品铁丝工艺，其特征在于；所述步骤一中配磨明细为5.6-4.9-4.2-3.7-3.2-2.8。
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