CN105689221B - 铝合金轮毂表面涂层的制造方法 - Google Patents

铝合金轮毂表面涂层的制造方法 Download PDF

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CN105689221B
CN105689221B CN201610090261.6A CN201610090261A CN105689221B CN 105689221 B CN105689221 B CN 105689221B CN 201610090261 A CN201610090261 A CN 201610090261A CN 105689221 B CN105689221 B CN 105689221B
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aluminum alloy
baking
manufacturing
alloy hub
coating
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CN105689221A (zh
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李书通
王海洪
张超
胡熙健
项斌
杨刚
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Geely Baikuang Group Co ltd
Geely Technology Group Co ltd
Guangxi Baikuang Metallurgical Technology Research Co ltd
Zhejiang Geely Holding Group Co Ltd
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Zhejiang Juke Industrial Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00Processes for applying liquids or other fluent materials
    • B05D1/02Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12Applying particulate materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254After-treatment

Abstract

本发明公开了一种铝合金轮毂表面涂层的制造方法,包括以下步骤:第一步,调漆;将硼硅酸盐底料、色粉、悬浮剂、水按100:8~20:15~20:30~35的比例依序加入球磨机;使球磨机进行球磨搅拌30~60min,制成浆液后使用;第二步,喷涂;将第一步中所制备的浆液先进行充分搅拌,使浆液内没有沉淀物;然后通过喷枪均匀喷涂至铝合金轮毂的表面,在铝合金轮毂的表面形成涂层;第三步,烘烤;对经过喷涂的铝合金轮毂在涂料流平后30~45s内进行烘烤,烘烤温度450~600℃,烘烤时间30~120min。本发明通过对铝合金轮毂表面涂装改性,不仅保持了铝合金轮毂原有机械性能及加工性能,而且显著提高了其防腐、耐磨以及耐热性能。

Description

铝合金轮毂表面涂层的制造方法
技术领域
本发明涉及一种涂层的制造方法,具体涉及一种铝合金轮毂表面涂层的制造方法。
背景技术
目前,汽车工业正朝着轻量、高速、安全、节能、舒适与环境污染轻的方向发展,因此铝合金零部件在汽车中的用量日益增多。轮毂作为汽车行驶系统中的重要部件之一,也是一种要求较高的保安件,它不仅承载汽车的重量,同时也体现着汽车的外观造型。
但是,铝合金轮毂在长期使用过程中,容易受外界腐蚀物的污染而造成腐蚀,这严重降低了铝合金轮毂的使用寿命,也大大影响了行车安全。因此,制备一种有效的防腐蚀的铝合金轮毂涂层是非常有必要的。
发明内容
本发明所要解决的技术问题是提供一种铝合金轮毂表面涂层的制造方法,它可以在保证铝轮毂固有机械性能及加工性能不变的基础上,提高铝轮毂的防腐、防磨以及耐热性能。
为解决上述技术问题,本发明铝合金轮毂表面涂层的制造方法的技术解决方案为,包括以下步骤:
第一步,调漆;
将硼硅酸盐底料、色粉、悬浮剂、水按100:8~20:15~20:30~35的比例依序加入球磨机;使球磨机以45转/秒的速度进行球磨搅拌30~60min,制成浆液后使用;
所得浆液的颗粒度为0.2~1.5g/325目/100ml,pH值为11~13。
第二步,喷涂;
将第一步中所制备的浆液先进行充分搅拌,使浆液内没有沉淀物;然后通过喷枪均匀喷涂至铝合金轮毂的表面,在铝合金轮毂的表面形成涂层;所形成的涂层的厚度为30~500μm。
第三步,烘烤;
对经过喷涂的铝合金轮毂在涂料流平后30~45s内进行烘烤,烘烤温度450~600℃,烘烤时间30~120min;烘烤的升温速率在10~15℃/min内。
本发明可以达到的技术效果是:
本发明所选用的涂料为无机涂料,不仅环保无污染,而且涂装方便,烘烤时间短,不影响铝合金轮毂大批量生产的生产效率。
本发明通过对铝合金轮毂表面涂装改性,不仅保持了铝合金轮毂原有机械性能及加工性能,而且显著提高了其防腐、耐磨以及耐热性能。
下面结合具体实施方式对本发明作进一步详细的说明。
具体实施方式
本发明铝合金轮毂表面涂层的制造方法,包括以下步骤:
第一步,调漆;
将硼硅酸盐底料、色粉、膨润土及高岭土混合物的悬浮剂、水按100:8~20:15~20:30~35的比例依序加入球磨机;
使球磨机以45转/秒的速度进行球磨搅拌30~60min,制成浆液后使用;
所得浆液的颗粒度为0.2~1.5g/325目/100ml,浆液的pH值控制在11~13内;
第二步,喷涂;
将第一步中所制备的浆液先进行充分搅拌,使浆液内没有沉淀物;然后通过喷枪均匀喷涂至铝合金轮毂的表面;
喷涂均匀且涂层的平均厚度为30~500μm;
第三步,烘烤;
使经过喷涂的铝合金轮毂在涂料流平后30~45s内进行烘烤,烘烤温度450~600℃,烘烤时间30~120min;烘烤的升温速率在10~15℃/min内。
第三步的烘烤不能在喷涂完后直接进行。
实施例1:
第一步,将硼硅酸盐底料、色粉、悬浮剂以及水按照100:12:20:30的比例依序加入球磨机,以45转/s的速度进行球磨搅拌30min,得到浆液;浆液的颗粒度为1.0g/325目/100ml,pH值为12;
第二步,将第一步中所制备的浆液通过喷枪均匀喷涂至铝合金轮毂表面;所制备的浆液在喷涂前必须充分搅拌,不可有沉淀物,喷涂后涂层均匀且平均厚度为150μm;
第三步,将第二步中已喷涂的铝合金轮毂在涂料流平后30~45s内进行烘烤, 烘烤温度为580℃下烘烤30min,金属烘烤升温速率在10~15℃/min;
所得的铝合金轮毂,其性能指标如下:
CASS盐雾试验:15天内无异常,表面显微硬度9H;
耐热温度:300℃。
实施例2:
第一步,将硼硅酸盐底料、色粉、悬浮剂以及水按照100:12:20:30的比例依序加入球磨机,以45转/s的速度进行球磨搅拌30min,得到浆液;浆液的颗粒度为1.0g/325目/100ml,pH值为12;
第二步,将第一步中所制备的浆液通过喷枪均匀喷涂至铝合金轮毂表面;所制备的浆液在喷涂前必须充分搅拌,不可有沉淀物,喷涂后涂层均匀且平均厚度为150μm;
第三步,将第二步中已喷涂的铝合金轮毂在涂料流平后30~45s内进行烘烤, 烘烤温度为580℃下烘烤90min,金属烘烤升温速率在10~15℃/min;
所得的铝合金轮毂,其性能指标如下:
CASS盐雾试验:20天内无异常,表面显微硬度9H;
耐热温度:300℃。

Claims (6)

1.一种铝合金轮毂表面涂层的制造方法,其特征在于,包括以下步骤:
第一步,调漆;
将硼硅酸盐底料、色粉、悬浮剂、水按100:8~20:15~20:30~35的比例依序加入球磨机;使球磨机进行球磨搅拌30~60min,制成浆液后使用;
第二步,喷涂;
将第一步中所制备的浆液先进行充分搅拌,使浆液内没有沉淀物;然后通过喷枪均匀喷涂至铝合金轮毂的表面,在铝合金轮毂的表面形成涂层;
第三步,烘烤;
对经过喷涂的铝合金轮毂进行烘烤,烘烤温度450~600℃,烘烤时间30~120min。
2.根据权利要求1所述的铝合金轮毂表面涂层的制造方法,其特征在于,所述第一步中球磨机的搅拌速度为45转/秒。
3.根据权利要求1所述的铝合金轮毂表面涂层的制造方法,其特征在于,所述第一步所得浆液的pH值为11~13。
4.根据权利要求1所述的铝合金轮毂表面涂层的制造方法,其特征在于,所述第二步所形成的涂层的厚度为30~500μm。
5.根据权利要求1所述的铝合金轮毂表面涂层的制造方法,其特征在于,所述第三步的烘烤在涂料流平后30~45s内进行。
6.根据权利要求1所述的铝合金轮毂表面涂层的制造方法,其特征在于,所述第三步的烘烤的升温速率在10~15℃/min内。
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