第五章 金属修理件的保护处理

第五章金属修理件的保护处理PROTECTIVE TREATMENT OF METALLIC REPAIR PARTS

一、General Information about Protective Treatments保护处理概述

1. When you do a repair or rework procedure that breaks the surface of an initial structure, you must apply a protective treatment to the surface. The treatment makes a base for the paint and inhibits corrosion when you apply it before the installation of the repair parts.

当修理破坏原始结构表面的时候，应进行表面保护处理。在安装部件前，保护层附着在材料表面抵抗腐蚀。

2. Bare aluminum and magnesium alloys in initial structure need a subsequent chemical conversion coating if you use a repair process that will cause the area to corrode.

对裸铝和镁合金进行可能导致腐蚀的修理时，应进行后续化学处理。

3. Bare aluminum alloy and the chamfered edges of clad aluminum alloy repair parts need a protective treatment before you apply a primer.

裸铝和有倒角的包铝合金修理件在涂底漆前需要保护处理。

4. All steel parts need cadmium plating.

所有钢件都需要镀镉。

5. If you use BMS 10-20 primer, then prepare the surface with the Alodine 600 chemical conversion coating. Do not use Alodine 1000 or Alodine 1200S in areas where you use BMS 10-20 primer material.

涂BMS 10-20底漆前要用Alodine 600处理，不能用Alodine 1000 或

Alodine 1200S。

6. If corrosion occurs on a structural component surface, the surface must be refinished. This is true even when the damage is not more than the applicable allowable damage limits. Refer to 20-40-00 of the Corrosion Prevention Manual and AMM if applicable.

当结构部件表面发生腐蚀时，即使腐蚀没超过容许极限，也必须整修表面。参考CPM 20-40-00和AMM。

7. Refer to 51-10-02, GENERAL for the mechanical cleanup procedure used to remove burrs or sharp edges.See Figure 5-1 for Corrosion removal tools.

根据SRM51-10-02, GENERAL机械打磨去除毛刺。腐蚀去除工具见Figure 5-1。

腐蚀去除Figure 5-1

二、Aluminum Alloy-Brush Chemical Conversion Coating Process铝合金刷涂化学转化层

1、When you work with powders or apply the solution to a surface, you must use a respirator, and wear goggles, rubber or neoprene gloves, boots and aprons that are made acid-resistant materials.Do not permit the solution or powder to touch your skin. If you do not obey,the corrosive chemicals can cause injury to personnel.

要接触粉末及刷涂溶液时，必须戴呼吸器，护目镜以及耐酸的橡胶手套，靴子，围裙。不要使溶液或粉末接触到皮肤。防腐化学剂会对人体造成伤害。

2、The products that follow are approved for use to make a chemical film on aluminum alloys: Alodine，Iridite and Turcoat Alumigold.

常用的铝合金化学转化剂有：Alodine，Iridite和Turcoat Alumigold。

3、Materials and Equipment Needed:

所需材料和设备：

(1) One of the following:

(a) Alodine 1200S powder, or

(b) Iridite 14-2 powder, or

(c) Turcoat Alumigold B powder, or

(d) Alodine 600 powder.

下列粉末Alodine 1200S，Iridite 14-2，Turcoat Alumigold B或者Alodine 600之一。