1、目 錄1.工藝鑒定要求61.1.總則61.2.設計要求61.3.工藝鑒定程序61.4.工藝鑒定試驗及試樣要求61.4.1.試樣要求61.4.2.試驗項目及試樣數量61.5.試驗方法及質量指標71.5.1.外觀71.5.2.鍍層厚度71.5.3.結合強度71.5.4.耐蝕性71.6.鑒定狀態的保持72.批生產檢驗要求72.1.鍍前表面質量要求72.2.鍍層外觀72.3.鍍層厚度82.4.結合強度82.5.耐蝕性8Error! Reference source not found.范 圍:本規范規定了華為技術有限公司產品的鋼、銅、鋅合金等金屬基體零件上鍍裝飾鉻的工藝要求及其質量要求。本規范適用于裝

2、飾鍍鉻的工藝鑒定和批生產質量檢驗。簡 介：本規范分兩部分，第一部分“工藝鑒定要求”規定了加工商必須保證的技術管理、工藝設施及產品質量水平要求，用作對供應商進行技術資格認證和首樣質量鑒定，是華為對裝飾鍍鉻零件進行質量鑒定的依據；第二部分規定了正常批生產條件下產品質量要求，是生產方控制批生產鍍層質量的標準依據，也是產品驗收的質量依據。本文所規定的電鍍鎳層，與以下標準中的鍍層相當：標準號標準名等效的鍍層類別ASTM B 456Standard Specification for Electrodeposited Coatings of Copper Plus Nickel Plus Chromium

3、 and Nickel Plus Chromium銅+鎳+鉻及鎳+鉻的電解沉積鍍層標準規范Service condition number SC 2（Moderate Service）ISO 1456Metallic coatings Electrodeposited coatings of nickel plus chromium and of copper plus nickel plus chromiumService condition number 2（Moderate）GB/T 9797金屬覆蓋層 鎳+鉻和銅+鎳+鉻電鍍層服役條件號2（中度）HB 5033鍍層和化學覆蓋層的選擇原則

4、與厚度系列使用條件II（一般）SJ 42金屬鍍層和化學處理層的分類、特性、應用范圍和標記使用條件 一般 D·L2Cu20/Ni10/Cr0.3關鍵詞：鍍鉻，鍍層，耐蝕性引用文件：下列文件中的條款通過本規范的引用而成為本規范的條款。凡是注日期的引用文件，其隨后所有的修改單（不包括勘誤的內容）或修訂版均不適用于本規范，然而，鼓勵根據本規范達成協議的各方研究是否可使用這些文件的最新版本。凡是不注日期的引用文件，其最新版本適用于本規范。序號文件編號文件名稱等效標準1.IEC60950-22Information technology equipment- Safety- Equipment

5、to be installed outdoorsUL60950-22EN60950-222.ISO 1463金屬和氧化物覆蓋層 覆蓋層厚度的測定 顯微法GB/T 64623.ISO 2177金屬覆蓋層 覆蓋層厚度的測量 陽極溶解庫侖法GB/T 49554.ISO 2819金屬基體上金屬覆蓋層（電沉積層和化學沉積層）附著強度試驗方法 GB/T 52705.ISO 4042緊固件.電鍍層GB/T 5267.16.ISO 9227人工氣候腐蝕試驗 鹽霧試驗GB/T 101257產品表面外觀缺陷的限定標準術語和定義：術語定義局部厚度在規定區域內進行規定次數厚度測量的算術平均值主視表面零件在裝配成完整產

6、品后處于正常視覺范圍內的可見表面生產批指同一天在相同條件下處理的、材料和形狀相似的零件的總和1. 工藝鑒定要求1.1. 總則 在對供應商進行工藝技術資格認證時、或者供應商有新產品首次生產時必須按本節要求進行工藝質量鑒定。原則上，已經鑒定過的材料、工藝只需要提供相關報告。生產者的工藝質量必須滿足第1節的要求。生產者的工藝設備、工藝流程、質量保證措施應在其主要的工藝文件中加以說明。1.2. 設計要求按本規范要求進行的裝飾鍍鉻工藝，對鋼鐵基體必須是電鍍銅鎳鉻的工藝。生產者應保持并遵守經華為技術有限公司（以下簡稱“華為”）正式批準的工藝和檢驗文件。1.3. 工藝鑒定程序被鑒定的工廠必須完成以下全部試驗

7、工作，這些試驗必須在零件批生產所用的條件下完成：試樣加工 （注1）表面處理 （注2）試樣檢查及測試提供試驗報告（注3）及試片給華為技術有限公司以便復驗。注：1、鑒定用試樣也可由華為技術有限公司完成并提供給被鑒定工廠。2、所有試樣必須同時進行處理。3、試驗報告的發出者必須是華為技術有限公司質量鑒定部門認可的試驗室或單位。1.4. 工藝鑒定試驗及試樣要求1.4.1. 試樣要求材料： 冷軋鋼尺寸： 80×125×1 4 (mm) 或 10 20 ×125(mm)表面粗糙度： Ra 0.8 m表面處理： 鍍銅 鎳鉻1.4.2. 試驗項目及試樣數量下表給出了工藝鑒定所需的試

8、驗項目和試樣數量要求：試驗項目試樣數量（件）外觀所有試樣鍍層厚度3結合強度3耐蝕性銅加速乙酸鹽霧試驗3+3 （僅對室內應用的零件）二氧化硫鹽霧試驗3+3 （僅對室外外殼上的零件）注： 其中三件為提供華為技術有限公司進行復驗用。1.5. 試驗方法及質量指標1.5.1. 外觀1）所有試樣均應按下列方法進行外觀檢查。在自然光或光照度在300-600LX的近似自然光下(如40W日光燈、距離500mm處)，相距為200mm350mm的距離下進行正常檢驗，也可以使用放大鏡進行參考檢驗。為了防止試件反射，影響正常視線，允許用半透明白光紙，隔開光源進行檢驗。2）鍍層應是光亮、稍帶有淺藍色的亮白色，且結晶均勻、

9、細致。3）允許在非工作面有夾具印。4）主視表面不允許有起泡、麻點、粗糙、脫落、分層、斑點、黑點、裂紋、針孔、起皮、發霧、局部無鍍層、污跡或變色等缺陷。1.5.2. 鍍層厚度1）按ISO 2177 在三個試樣上進行厚度檢測，分別測量銅、鎳及鉻層厚度。（有爭議時，用庫侖法測量鉻層厚度，按ISO 1463 用顯微鏡法測量鎳和銅層厚度。）2）每一試樣的鍍層總厚度應為 3040 m，其中銅鍍層為 2025 m、鎳鍍層為1015 m、鉻鍍層不低于 0.3 m。1.5.3. 結合強度1）在三件試樣上進行鍍層的結合強度試驗。2）按 ISO 2819 的“挫刀試驗”方法進行檢測，每一試樣上鍍層與基體、鍍層與鍍層

10、之間應結合良好，沒有任何分離現象。1.5.4. 耐蝕性1）在試樣上進行試驗。2）對產品內部應用的零件生產：按ISO 9227 方法進行8小時的 CASS 試驗（銅加速乙酸鹽霧試驗）；試驗后，在試樣邊緣以外的表面不能出現基體腐蝕現象。3）對戶外產品外表面應用的零件生產：按IEC60950-22第8.3節的規定進行24天二氧化硫鹽霧試驗，試驗后，在試樣表面不允許出現黑點、綠點、或白色物質等基材腐蝕現象。1.6. 鑒定狀態的保持經過華為公司鑒定的工藝，在未得到華為的同意之前，不能改變任何可影響性能質量的工藝參數，否則將重新進行鑒定.。2. 批生產檢驗要求2.1. 鍍前表面質量要求1）應無嚴重油污、金

11、屬屑、銹蝕和氧化皮等；2）零件表面應無毛刺、裂紋、壓坑等因操作不良而導致的人為損傷；表面劃傷不能超出DKBA0.400.0021 要求；3）裝飾表面必須經過機械拋光（或其它等效的方法）處理，其表面粗糙度應為Ra0.8。2.2. 鍍層外觀1）所有試樣均應按下列方法進行外觀檢查。在自然光或光照度在300-600LX的近似自然光下(如40W日光燈、距離500mm處)，相距為200mm350mm的距離下進行正常檢驗，也可以使用放大鏡進行參考檢驗。為了防止試件反射，影響正常視線，允許用半透明白光紙，隔開光源進行檢驗。2）鍍層應是光亮、稍帶有淺藍色的亮白色，且結晶均勻、細致、光滑、連續。3）允許在非工作面

12、有夾具印。4）主視表面不允許有起泡、麻點、粗糙、脫落、分層、斑點、黑點、裂紋、針孔、起皮、發霧、局部無鍍層（盲孔內、以及深度大于直徑的孔內部分除外）、污跡或變色等缺陷。2.3. 鍍層厚度1）按ISO 2177 進行厚度檢測、也可利用X射線鍍層分析儀進行測試。厚度檢查在零件上進行；每批零件都需檢測。分別測量銅、鎳及鉻層厚度。2）對鋼鐵、鋁或鋅合金零件表面：凡能被直徑為 20 mm 的球接觸到的區域，其局部總厚度必須達到 30 m以上，其中銅鍍層為 2025 m、鎳鍍層為1015 m、鉻鍍層不低于 0.3m；盲孔內、以及深度大于直徑或開口寬度的部分不規定厚度。3）對銅合金零件表面：凡能被直徑為 2

13、0 mm 的球接觸到的區域，鎳鍍層為1520 m、鉻鍍層不低于 0.3 m；盲孔內、以及深度大于直徑或開口寬度的部分不規定厚度。4）凡直徑為 20 mm 的球不能接觸到的區域，其厚度不作要求。5）對螺紋緊固件：其鍍層厚度必須符合圖紙或 GB/T 5267.1 中的要求，大致如下表所示；其厚度檢測方法按 ISO 4042的相關內容進行。螺紋公稱直徑(mm)2.53810121422鍍層厚度(m)358102.4. 結合強度1）每批至少檢查一件試樣（試樣要求見 節）或樣件。2）按ISO 2819 的“銼刀試驗”方法進行檢測，鍍層與基體、鍍層與鍍層之間應結合良好，沒有任何分離現象。3）對螺紋緊固件不

14、要求此項內容。2.5. 耐蝕性1）每批至少檢查一件零件。2）按ISO 9227方法進行 8H 的 CASS 試驗（銅加速乙酸鹽霧試驗）；試驗后，在零件表面不能出現基體腐蝕跡象（白色、紅色、綠色或黑色），但以下情況除外：a、允許在螺紋部位出現有基材的腐蝕現象。b、在深凹結構（深度大于開口寬度）底部，允許出現有不多于3個的腐蝕點，每個腐蝕點的直徑規定為：鈑金或型材零件不大于0.5mm，鑄件不大于1.0mm。c、在零件其它的結構棱邊、角上，鑄件零件允許出現不多于3個的腐蝕點，每個腐蝕點的直徑不大于1.0mm；鋼、銅零件不允許出現腐蝕。3）滿足耐蝕性要求的零件，在鍍層厚度方面可以不強制要求符合2.3節

15、。TABLE OF CONTENTS1REQUIREMENTS FOR PROCESS AUTHENTICATION121.1General Principles121.2Design Requirement121.3Qualification Procedure121.4Definition of Tests and Test Specimens12Test specimens12Test Items and Sample Quantity121.5Test Methods and Quality Requirement13Appearance13Coat Thickness13Bondin

16、g Strength13Corrosion Resistance131.6Maintenance of Qualification State142REQUIREMENTS FOR BATCH PRODUCTION142.1Pre-Electroplating Surface Quality Requirements142.2Appearance142.3Coat Thickness142.4Bonding Strength152.5Corrosion Resistance15Error! Reference source not found. ScopeThis document defin

17、es Huaweis process requirements and quality requirements for electroplating decorative chrome on such metallic matrixes as steel、copper and zinc alloy. The technical specifications are applicable to chromeplating process appraisal and quality inspection for batch production.Brief introductionThis sp

18、ecification includes two parts. Part 1 is Requirements for Process Authentication, which defines that the producer must assure the quality of technical management , equipment and product. We authenticate the technical qualification and the quality of the first specimen using the specification, which

19、 is the authentication evidence of nickel-plating part of HUAWEI. The part 2 defines the quality requirement of the product in common series production, which is the evidence for the quality control of series production, also, is the quality evidence of product admittance.Key wordsChrome Plating，coa

20、t，corrosion resistanceReferenced DocumentsThe following normative documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments, excluding corrections, to, or revisions of, any of these publications do not

21、 apply. However, parties to agreements based on this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents. For undated references, the latest edition of the normative document referred to applies.No.Doc No.Doc TitleEquivalent1.IE

22、C60950-22Information technology equipment- SafetyEquipment to be installed outdoorsUL60950-22EN60950-222.ISO 1463Metallic and oxide coatings - Measurement of coating thickness - Microscopical methodGB/T 64623.ISO 2177Metallic coatings - Measurement of coating thickness - Coulometric method by anodic

23、 dissolutionGB/T 49554.ISO 2819Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesionGB/T 52705.ISO 4042Fasteners-Electroplated coatingsGB/T 5267.16.ISO 9227Corrosion tests in artificialatmospheres Salt spray t

24、estsGB/T 101257Cosmetic Standard for Product SurfacesTerm&DefinitionTermDefinitionLocal thicknessThe arithmetic mean value of the thickness measured in specified number of times and specified area.main-view surfaceThe visible surface within the normal visual field when the parts have been assemb

25、led into integral products.BatchThe totaling of parts with similar material and shape treated in the same day under the same condition.1 Requirements for Process Authentication1.1 General PrinciplesThe process authentication must be carried out for supplier according to requirements described in thi

26、s chapter when competence of the supplier is being authenticated or the new products are being manufactured. equipment and quality meet the requirements in section 1.Producer shall explain the equipment used, the process flow and the quality control measures in the main process documents. Producer s

27、hall ensure that their processes.1.2 Design RequirementAs stipulated by the technical specifications herein, the steel & iron matrix must undergo the following process: electroplate copper, nickel, and chrome. The producer should abide by the process documents and inspection documents approved b

28、y Huawei officially.1.3 Qualification Procedure The factory to be appraised should complete all the following tests upon condition that the parts are produced in batches. l Sample processing (Note 1)l Surface treatment (Note 2)l Sample inspection and test The test report (for details, see Note 3) an

29、d test pieces should be provided to Huawei for the purpose of reinspection. Note 1: The test pieces can be arranged and provided by Huawei for the factory. Note 2: All samples must be processed at a time. Note 3: The test report must be released by a laboratory or institution recognized by Huaweis q

30、uality appraisal department.1.4 Definition of Tests and Test Specimens1.4.1 Test specimensMaterial: 20 Cold rolled steel Size: 80 × 125 × 1 to 4 (mm) or 10 to 20 × 125 (mm) Surface roughness: Ra 0.8 mmSurface Treatment: Electroplate copper, nickel, and chrome.1.4.2 Test Items and Samp

31、le QuantityFollowing table shows requirements for test items and sample quantity in process qualification.Test ItemsSample QuantityAppearance All samples Thickness of coating 3Binding strength 3Corrosion resistancecopper accelerated acetic acid salt spray test3+3 （only for the part indoor using）SO2

32、salt spray test3+3 （only for the part outdoor using）notes：Three samples are provided to Huawei for the purpose of reinspection.1.5 Test Methods and Quality Requirement1.5.1 Appearancea) All the test specimens must go through visual examination as follow:The test specimens must be checked up in natur

33、al beam or similar beam with luminosity between 300600LX, such as the 40W fluorescent lamp with distance 500mm. The visual distance is between 200350mm. Also you can use the magnifier for reference. In case of specimens reflection for our judgement, the semi- transparent white-light paper can be use

34、d to space out the disturbance of lamp-house.2）The coating should be lustrous with a little light blue, and the crystallization should be even and tiny.3）Clamp marks are allowed in a non-working surface.4）The following flaws are not allowed in the primary vision surface: bubble, pocking mark, roughn

35、ess, fall-off, delamination, spot, macula, crackle, pinhole, peeling, mould, no coating locally, stain, and discoloration.1.5.2 Coat Thickness1）Measure the thickness of three samples in accordance with ISO 2177, and measure the thickness of the copper coating, nickel coating, and chrome coating resp

36、ectively. (in case of controversy, measure the thickness of the chrome coating through the coulometry, and measure the thickness of the nickel coating and copper coating respectively through a microscope in accordance with ISO 1463)2）For each sample, the total thickness of the coatings should be 30

37、to 40 mm. Specifically speaking, the copper coating is 20 to 25 mm in thickness, the nickel coating is 10 to 15 mm in thickness, and the chrome coating is at least 0.3 mm in thickness.1.5.3 Bonding Strength1）Test the bonding strength of the coatings for the three samples.2）Use the file test methodol

38、ogy as described in ISO 2819. In each sample, the coatings should be bound to the matrix well and the coatings should also be bound to each other.1.5.4 Corrosion Resistance1）Three samples undergo the corrosion-resistance test.2）For the production inside using, Conduct an eight-hour copper-accelerate

39、d acetic acid-salt spray testing (CASS test) in accordance with ISO 9227. After the test is complete, no matrix should be corroded in the surface beyond the edge of the sample.3）For the outdoor production outside using, Conduct an 24-days SO2 salt spray testing in accordance with IEC60950-22 issue 8

40、.3. After the test is complete, no matrix should be corroded with black、green or white spots in the surface .1.6 Maintenance of Qualification StateWithout prior consent of Huaweis process department or quality inspection department, do not modify the process parameters of any process appraised by Hu

41、awei, which may affect its performance quality. Otherwise, the process has to be appraised again.2 Requirements for Batch Production2.1 Pre-Electroplating Surface Quality Requirements1）No serious oil stain, metal particles, rust, or oxide skin is allowed.2）Various misoperations-caused damages (burr,

42、 crackle, or indentation) are not allowed in the surface of every part. The superficial scratch should not exceed the range allowed by DKBA0.400.0021.3）The decorative surface should undergo the mechanical polishing treatment (or equivalent), and the surface roughness Ra should be not higher than 0.8

43、.2.2 Appearance1) All the test specimens must go through visual examination as follow:The test specimens must be checked up in natural beam or similar beam with luminosity between 300600LX, such as the 40W fluorescent lamp with distance 500mm. The visual distance is between 200350mm. Also you can us

44、e the magnifier for reference. In case of specimens reflection for our judgement, the semi- transparent white-light paper can be used to space out the disturbance of lamp-house.2）The coating should be lustrous with a little light blue, and the crystallization should be even, tiny, sleek, and continu

45、ous.3）Clamp marks are allowed in a non-working surface.4）The following flaws are not allowed in the primary vision surface: bubble, pocking mark, roughness, fall-off, delamination, spot, macula, crackle, pinhole, peeling, mould, no coating locally (except in a blind hole or in a hole with its depth

46、greater than its diameter), stain, and discoloration.2.3 Coat Thickness1）Measure the thickness of the samples respectively in accordance with ISO 2177 or by using an X-ray coating analyzer. Thickness measurement is made in the parts. Every batch of parts should be measured. The thickness of the copp

47、er coating, nickel coating, and chrome coating should be measured respectively.2）For the surface of the parts made of steel & iron or zinc alloy, the total local thickness should be at least 30 m in any area accessible to a ball with a diameter of 20 mm (specifically speaking, the copper coating

48、 is 20 to 25 mm in thickness, the nickel coating is 10 to 15 m in thickness, and the chrome coating is at least 0.3 m in thickness). No specific thickness is required in a blind hole or in a hole with its depth greater than its diameter or opening width.3）For the surface of the parts made of copper

49、alloy: For the area accessible to the ball with a diameter of 20mm, the nickel coating should be 15 to 20 m in thickness, and the chrome coating should be at least 0.3 m in thickness. No specific thickness is required in a blind hole or in a hole with its depth greater than its diameter or opening width.4）No specific thickness is required in an area that is not accessible to a