1C31157G02模块备件

1C31157G02

注9：涂层厚度不能在盲板或板上控制
小直径深孔或溶液循环受限的地方。
7.2.3附着力：涂层应具有足够的附着力
以通过规定的粘附试验（见9.4
和试验方法B 571）。
7.2.4孔隙率：涂层应基本无孔
当根据9.6中的一种方法进行试验时
方法、试验持续时间和允许斑点数
应规定单位面积（见第5.1.10节和第9.6节）。
B 733-97
4.
7.3资格要求：这些要求包括：
放置在沉积物和工艺上，并在
试样，以确定沉积和电镀工艺。测试
对于这些认证要求，应执行：
每月或更频繁。
7.3.1 II、III、IV、V类沉积物的成分应为：
通过磷测试分析合金成分（参见
9.1). 磷的重量百分比应在以下范围内：
由类型分类指定（见4.1）。
7.3.2显微硬度——应通过试验方法B 578（努氏硬度计）测定2类沉积物的显微硬度。对于
对于2级涂层，显微硬度应等于或超过a
低850（HK100（或同等维氏硬度）（见4.3和
9.5). 使用表E 140将维氏硬度转换为努氏硬度
不推荐使用。
7.3.3氢脆：用于在高强度钢上沉积涂层的工艺应进行以下评估：
氢脆试验方法F 519。
8.抽样
8.1敦促买方和生产商在涂装过程中采用统计过程控制。正确执行
这将确保涂层产品具有令人满意的质量
减少验收数量。
8.1.1抽样计划只能筛选出不合格项
不保证任何产品都不被接受的产品。
(7)
8.2用于检验数量的抽样计划
涂层零件（批次）的试验方法应为B 602，除非：
买方在采购订单中另有规定，或
合同（见第5.1.11节和第S.11.1节）。
注10：通常，当收集涂层零件（检验批）时
8.2）检查是否符合零件上的要求
随机选择相对较少数量的零件，即样本
检查。然后，检验批被归类为合格或不合格
根据检查结果符合要求
样品样本大小和符合性标准如下：
由统计学的应用确定。该过程称为
抽样检查。三个标准试验方法B 602，指南B 697，
和试验方法B 762中包含的抽样计划是针对以下情况设计的：
涂料的抽样检验。
试验方法B 602包含四个抽样计划，其中三个用于试验
这是非破坏性的，一个用于破坏性测试。这个
买方和生产商可就使用的计划达成一致。如果它们没有，
测试方法B 602确定了要使用的计划。
指南B 697提供了大量计划，并给出了指导
关于计划的选择。当规定了指南B 697时
生产商需要就使用的计划达成一致。
试验方法B 762仅适用于以下涂层要求：
例如涂层厚度。后一个必须产生一个
必须满足数值和某些统计要求。测验
方法B 762包含多个计划，并给出了以下说明：
计算满足特殊需求的计划。买方和生产商可以：
商定要使用的计划。如果没有，则采用试验方法B 762
确定要使用的计划。
检验批应定义为涂层零件的集合
是按相同规格生产的同类产品，
其已由单个生产商一次或大约一次涂覆
同时，在基本相同的条件下，作为一组提交接受或拒绝。
8.3验收抽样计划中使用的所有试样
试验应使用相同的基础材料和相同的材料进行
根据本规范电镀的物品的冶金条件。
8.4所有试样应由买方提供，除非：
否则由生产商同意。
注11：自动催化镍工艺是动态的，每天都有一次
建议取样。对于需要合金分析的涂层
腐蚀试验应考虑每周取样。
9.试验方法
9.1磷的沉积分析：
9.1.1磷的测定-测定质量百分比
磷含量符合规程E 60的试验方法
E 352或测试方法E 156
溶于温暖的浓硝酸中。
9.1.2成分可通过原子吸收测定，
发射或X射线荧光光谱法。
注12：电感耦合等离子体技术可以确定
合金含量在0.5%以内。已经分析了以下分析波长线：
习惯于

1C31157G02

1C31157G02

NOTE 9—The thickness of the coating cannot be controlled in blind or small diameter deep holes or where solution circulation is restricted. 7.2.3 Adhesion—The coating shall have sufficient adhesion to the basis metal to pass the specified adhesion test (see 9.4 and Test Methods B 571). 7.2.4 Porosity—The coatings shall be essentially pore free when tested according to one of the methods of 9.6. The test method, the duration of the test, and number of allowable spots per unit area shall be specified (see section 5.1.10 and 9.6). B 733 – 97 4 7.3 Qualification Requirements—These requirements are placed on the deposit and process and are performed on specimens to qualify the deposit and plating process. The tests for these qualification requirements shall be performed monthly or more frequently. 7.3.1 Composition—Type II, III, IV, V deposits shall be analyzed for alloy composition by testing for phosphorus (see 9.1). The weight percent of phosphorus shall be in the range designated by type classification (see 4.1). 7.3.2 Microhardness—The microhardness of Class 2 deposits shall be determined by Test Method B 578 (Knoop). For Class 2 coatings, the microhardness shall equal or exceed a minimum of 850 (HK100 (or equivalent Vickers) (see 4.3 and 9.5). The conversion of Vickers to Knoop using Tables E 140 is not recommended. 7.3.3 Hydrogen Embrittlement—The process used to deposit a coating onto high strength steels shall be evaluated for hydrogen embrittlement by Test Method F 519. 8. Sampling 8.1 The purchaser and producer are urged to employ statistical process control in the coating process. Properly performed this will ensure coated products of satisfactory quality and will reduce the amount of acceptance inspection. 8.1.1 Sampling plans can only screen out unsatisfactory products without assurance that none of them will be accepted. (7) 8.2 The sampling plan used for the inspection of a quantity of coated parts (lot) shall be Test Method B 602 unless otherwise specified by purchaser in the purchase order or contract (see section 5.1.11 and S.11.1). NOTE 10—Usually, when a collection of coated parts (the inspection lot 8.2) is examined for compliance with the requirements placed on the parts a relatively small number of parts, the sample, is selected at random and inspected. The inspection lot is then classified as complying or not complying with the requirements based on the results of the inspection sample. The size of the sample and the criteria of compliance are determined by the application of statistics. The procedure is known as sampling inspection. Three standards Test Method B 602, Guide B 697, and Test Method B 762 contain sampling plans that are designed for the sampling inspection of coatings. Test Method B 602 contains four sampling plans, three for use with tests that are nondestructive and one for use with tests that are destructive. The purchaser and producer may agree on the plan(s) to be used. If they do not, Test Method B 602 identifies the plan to be used. Guide B 697 provides a large number of plans and also gives guidance on the selection of a plan. When Guide B 697 is specified, the purchaser and producer need to agree on the plan to be used. Test Method B 762 can be used only for coating requirements that have a numerical limit, such as coating thickness. The last must yield a numerical value and certain statistical requirements must be met. Test Method B 762 contains several plans and also gives instructions for calculating plans to meet special needs. The purchaser and producer may agree on the plan(s) to be used. If they do not, Test Method B 762 identifies the plan to be used. An inspection lot shall be defined as a collection of coated parts which are of the same kind, that have been produced to the same specification, that have been coated by a single producer at one time or approximately the same time under essentially identical conditions, and that are submitted for acceptance or rejection as a group. 8.3 All specimens used in the sampling plan for acceptance tests shall be made of the same basis material and in the same metallurgical condition as articles being plated to this specification. 8.4 All specimens shall be provided by the purchaser unless otherwise agreed to by the producer. NOTE 11—The autocatalytic nickel process is dynamic and a daily sampling is recommended. For Coatings requiring alloy analysis and corrosion testing weekly sampling should be considered as an option. 9. Test Methods 9.1 Deposit Analysis for Phosphorus: 9.1.1 Phosphorus Determination—Determine mass % phosphorus content according to Practice E 60, Test Methods E 352, or Test Method E 156 on known weight of deposit dissolved in warm concentrated nitric acid. 9.1.2 Composition can be determined by atomic absorption, emission or X-ray fluorescence spectrometry. NOTE 12—Inductively coupled plasma techniques can determine the alloy to within 0.5 %. The following analysis wavelength lines have been used with minimum interference to determine the alloy. Ni 216.10 nm Cd 214.44 nm Fe 238.20 nm P 215.40 nm Co 238.34 nm Pb 283.30 nm P 213.62 nm Cr 284.32 nm Sn 198.94 nm Al 202.55 nm Cu 324.75 nm Zn 206.20 nm 9.2 Appearance—Examine the coating visually for compliance with the requirements of 7.2.1. 9.3 Thickness: NOTE 13—Eddy-current type instruments give erratic measurements due to variations in conductivity of the coatings with changes in phosphorus content. 9.3.1 Microscopical Method—Measure the coating thickness of a cross section according to Test Method B 487. NOTE 14—To protect the edges, electroplate the specimens with a minimum of 5 µm of nickel or copper prior to cross sectioning. 9.3.2 Magnetic Induction Instrument Method—Test Method B 499 is applicable to magnetic substrates plated with autocatalytic nickel deposits, that contain more than 11 mass % phosphorus (not ferrom