1. תקנון פעולת בדיקת תהליך הצבע, כך שאנשי בדיקת האיכות יוכלו לעבוד על פי הבסיס.

2. היקף היישום: all in-plant coating products, including powder coating. Process inspection for liquid coating and outsourcing.

3. Frequency of sampling inspection: 2 PCS of the first piece were tested, and 1PCS were recorded; Process 4PCS/HR, record 2PCS.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

Iv. Inspection contents:

4.1 Test before processing:

4.1.1 Check the process card and material label of the previous process. If there is no process card or the record of the process card is incomplete or the process is not completed or there is no material label or the label is not clear, it will be treated as unqualified products.

4.1.2 Conduct sampling inspection on the pre-treated materials, mainly check the appearance of the factory products for scratches. Deformation. Distortion. Welding slag. Desoldering, breakage, וכו. Make detailed records if necessary.

4.2 Pre-treatment test:

4.2.1 Degreasing: Use alkaline solution degreasing, degreasing time is not less than 3 דקות.

4.2.2 ניקוי: clean water is used.

4.2.3 Pickling: the acid solution removes the embroidery, and the surface of the workpiece is shiny without embroidery spots after pickling.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

4.2.4 Neutralization: alkaline solution is neutralized.

4.2.5 ניקוי: clean with clean water.

4.2.6 Skin film: phosphate skin film treatment, the surface is dark gray after treatment.

4.2.7 ניקוי: clean with clean water.

4.2.8 יִבּוּשׁ: drying furnace for drying treatment, generally 120~150℃ drying.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

הערות:

1. The concentration of pretreatment liquid shall be checked regularly by the production unit. For the specific standard, please refer to the SOP operation instruction.

2. Surface requirements of workpiece after pre-treatment: no cracking. Embroider spot. Edge. Weld evenly. No welding slag. No distortion. Concave and convex points and other bad conditions are qualified, the surface is dark gray after pre-treatment.

4.3 Baking Paint:

4.3.1 מראה חיצוני: If the coating surface is free of whitening, yelping, paint dropping, חרירים, sand grains, wrinkled orange peel, שלפוחיות, scratches, embroidery spots, hanging spots, and wool thorns, זה מוסמך. Please refer to < Appearance Standard > for details.

4.3.2 בדיקת הידבקות: Please refer to “Paint Development Test Standard” for details.

תֶקֶן: according to the scratch method, according to the standard requirements for scratch and then use 3M adhesive paper in the spacing of 1MM for the horizontal and vertical square of 10 square compaction, to 180° horizontal direction tear adhesive paper, visual inspection and statistics of the number of good lattice, lattice integrity rate of 90% for qualified.

4.3.3 Gloss:

1. ציפוי: 3-9 (באמצעות 60 degrees gloss tester test). Use A clean cloth to wipe the product to be tested, and then place the calibrated gloss meter on the product and press the measurement key. The data displayed on the display screen is gloss.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

2. Heat at 600 F for 4 שעה (ות, not below weber’s minimum requirements.

4.3.4 Film thickness: The film thickness of key parts shall be controlled to prevent the ignition caused by too thick coating.

1. Single coating: 2.0-4.0mils

2. ציפוי: 2.0-4.0mils

3. Maximum total coating thickness: 8mils

4.3.5 Texture: Compare the product with the standard sample provided by Weber and visually check whether there is a big difference in texture.

4.3.6 Impact resistance test: (in accordance with ASTMD2794)

1. According to Weber test standard 80in/lb, put the color board on the base of the impacter, the coating is facing down, and the impact head falls freely from the predetermined height. אחרי המבחן, בדוק אם נקודת הבליטה של ​​חלק הפגיעה סדוקה, אם הוא לא נסדק, זה מוסמך, אחרת זה לא כשיר.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

4.3.7 מבחן קשיות:

1. ראשית הנח את מכשיר העיפרון המצופה על שולחן עבודה שטוח, הכנס את העיפרון המושחז לחור של המכשיר, לאחר מכן הנח את בלוק הכוונון בחלק התחתון של גוף המכשיר, הכנס את העיפרון לחלק הפנימי עד שעוטף העיפרון נוגע בשולחן העבודה, סובב את בורג הנעילה, וסובב את המכשיר מעל 90°.

2. הנח את בודק הקשיות הטעון בעיפרון על המשטח הנמדד של המוצר, ולדחוף קדימה במהירות קבועה של כ-1 מ"מ לשנייה (הכוח או הקצה של קצה עופרת העיפרון נשבר או שהסרט ניזוק מחרשה). מתחילים מהקשה ביותר (6ח) עִפָּרוֹן, plow five marks of 3mm long for each grade until the pencil without plow damage is found. The hardness of the pencil represents the hardness of the measured film.

3.Weber minimum hardness must reach 2H.

4.3.8 Elasticity: After the coating surface is bent at 180° diameter of 1/8, if there is no loss of adhesion or surface crack, זה מוסמך; otherwise, it is unqualified.

4.3.9 צֶבַע: There is no obvious color difference in the control color board.

ASTM D412-0 בדיקה של תהליך צבע אפייה בארגון

4.3.10 Record: It is not necessary to record each pre-treatment process, but it is necessary to record the relevant inspection before pre-treatment in detail, and record the results after baking according to the sampling and record requirements.

Film thickness requirements Schedule: