SH/T 0216-1999 Sprayability test method for rust preventive oil

AI-translated method card — human verification pending. This is not an official translation of the standard. Unclear source values remain unverified; check the original standard and product certificate before use.

Card type: Test method

1. Method number / full title / English name / replacement relationship

• Standard number: SH/T 0216-1999
• Chinese name: Sprayability test method for rust preventive oil
• English name: Test method for sprayability of rust preventive oils (the English title is garbled in the source transcription; its wording remains subject to verification)
• Replacement relationship: replaces SH/T 0216-1992
• Adoption relationship: equivalent adoption of the clause 5.27 “Sprayability test method for rust preventive oil” in Japanese Industrial Standard JIS K 2246-1994 “Rust preventive oil”
• Differences from clause 5.27 in JIS K 2246-1994: added cleaning of glass plates with solvent naphtha and anhydrous ethanol
• First issued: 1992 year 5 month
• Approval/implementation: approved by the State Bureau of Petroleum and Chemical Industry 1999-12-08, implemented 2000-05-01

2. Scope of application and non-applicability

• This standard specifies the test method for determining the sprayability of rust preventive oil.
• This standard applies to solvent-diluted rust preventive oil.
• Not applicable: not provided in the available source.

3. Method principle

Use a spray gun to spray the sample onto a clean, smooth glass plate surface; after the oil film dries, check the continuity of the oil film, thereby evaluating the sprayability of the rust preventive oil.

4. Reagents and materials (purity / preparation)

• 4.2.1 Glass plate: smooth glass plate of 100mm × 200mm × 5mm.
• 4.2.2 Solvent naphtha: meets the specification requirements of SH 0005.
• 5 Reagent: anhydrous ethanol, analytical grade.
• Preparation method: not provided in the available source.

5. Instruments and equipment

• 4.1.1 Spray gun: nozzle diameter 1mm, working pressure 200～600kPa, material tank capacity 600～900mL (original text “MLa”, requires confirmation against the source standard (source-text extraction)).
• 4.1.2 Low-temperature chamber: temperature can be kept constant at 5℃±1℃, volume greater than the volume of the spray material tank.
• 4.1.3 Thermometer: 0～100℃, scale division value 1℃.
• 4.1.4 Stopwatch: scale division value 0.2s.

6. Recommended operating conditions

• Spray air pressure: 245kPa.
• Nozzle distance from glass plate surface: 300mm, and perpendicular to the plate surface.
• Spraying speed: 25mm/s, spray once from left to right.
• Low-temperature chamber temperature: 5℃±1℃.
• Time for sample to be placed in the low-temperature chamber: 24h (before spraying); after spraying, the glass plate is kept in the low-temperature chamber for 24h.
• Glass plate placement: placed vertically, with the long edge kept horizontal.

7. Sampling and sample preparation

• Pour the sample into the spray gun material tank, with the added amount being 1/2～1/3 of the material tank volume.
• Place the sample in the 5℃±1℃ low-temperature chamber for 24h.
• Clean two glass plates with solvent naphtha and anhydrous ethanol, and use after drying.
• Other sampling requirements: not provided in the available source.

8. Analysis procedure

• 6.1 Pour the sample into the spray gun material tank, with the added amount being 1/2～1/3 of the material tank volume. Place in the 5℃±1℃ low-temperature chamber for 24h.
• 6.2 Clean two glass plates with solvent naphtha and anhydrous ethanol; after drying, place the glass plates vertically, with the long edge kept horizontal.
• 6.3 Aim the spray gun at the glass plate surface, with the nozzle distance from the glass plate surface being 300mm and perpendicular to the plate surface, adjust the spray air pressure to 245kPa, and spray once from left to right at a speed of 25mm/s.
• 6.4 Place the sprayed glass plate, in the state as during spraying, into a low-temperature chamber at 5℃±1℃ and keep for 24h.
• 6.5 Take the glass plate out of the low-temperature chamber, and visually inspect whether the oil film is continuous except for the area within a peripheral distance of 15mm.

9. Qualitative and quantitative determination and calculation formula

• 7.1 If the oil films on both glass plate surfaces are confirmed by visual inspection to be continuous, then the oil film is judged to be continuous. Conversely, if both are discontinuous, it is judged that the oil film is discontinuous.
• 7.2 If the oil film on one of the glass plate surfaces is visually inspected as discontinuous, the test needs to be repeated; if in the repeated test result the oil film on more than one glass plate surface (including one) is again visually inspected as discontinuous, then it is judged that the oil film is discontinuous.
• Calculation formula: not provided in the available source.

10. Precision

Not provided in the available source.

11. Report

Not provided in the available source.

12. Referenced documents

• SH 0005 Solvent naphtha for the paint industry

13. Source and verification

This page is an AI translation of the available Chinese method card. Human verification is pending. It is not an official translation of the standard. Check the source standard and product certificate before use.

14. Quick Q&A reference