SH/T 0063-1991 Test method for drying property of 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 / supersession relationship

• Standard number: SH/T 0063-91
• Full title: Test method for drying property of rust-preventive oil
• English name: not provided in the available source
• Supersession relationship: not provided in the available source (the source text marks "(2001) confirmed")
• Approval/implementation: approved by China Petrochemical Corporation in 1991-06-28, implemented in 1992-07-01
• Reference adoption: the drying property test method in clause 5.20 of Japanese Industrial Standard JIS K 2246-89 "Rust-preventive oil"

2. Scope of application and non-applicability

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

3. Method principle

After a test piece coated with the sample is naturally dried under 23℃±3℃ for the specified time, its drying state is checked.

4. Reagents and materials (purity / preparation)

4.1 Apparatus

• a. Desiccator.
• b. Hot-and-cold dual-purpose hair dryer.
• c. Constant-temperature water bath.
• d. Mercury thermometer: 0 to 50℃, with a scale division of 1℃.
• e. Beaker: 600mL.

4.2 Materials

• a. Metal test piece: meets the material and specification dimension requirements for test pieces in method SH/T 0218 A. A test piece of 60mm×80mm with both holes punched on the 80mm side may be used, or a test piece of 60mm×80mm with both holes punched on the 60mm side may be used.
• b. Abrasive cloth: grit number 240.
• c. Absorbent cotton: should be dry.
• d. Stainless steel wire hook: diameter about 1mm.
• e. Rack: capable of hanging the test piece vertically.

5. Reagents

• 5.1 Petroleum ether: 60 to 90℃, analytical reagent grade.
• 5.2 Anhydrous ethanol: chemical reagent grade.

5. Instruments and equipment

See 4.1 (desiccator, hot-and-cold dual-purpose hair dryer, constant-temperature water bath, mercury thermometer, beaker).

6. Recommended operating conditions

• Drying environment temperature: 23℃±3℃.
• Oil immersion temperature: 23℃±3℃.
• Immersion time: 1min.
• Pull-up speed: 100mm per minute.
• Drying location: clean location, natural drying.
• Drying time: as specified in the product standard.

7. Sampling and test specimen preparation

• 7.1 Carry out grinding, cleaning and blow-drying of the test piece in accordance with SH/T 0218.
• 7.2 Pour 500mL of the shaken sample into a beaker, and remove bubbles from the sample surface.
• 7.3 Suspend the test piece prepared in 6.1 with a stainless steel wire hook, immerse it vertically in the sample at 23℃±3℃, and after immersing for 1min, pull it up at a speed of 100mm per minute.

8. Analytical procedure

• 8.1 Hang the oil-coated test piece on the rack and place it in a clean location at 23℃±3℃ for natural drying.
• 8.2 Conduct the test according to the drying time specified in the product standard, then check the drying state of the coated oil film by the finger-touch method.

9. Qualitative and quantitative determination and calculation formula

Result judgment (the expression methods for drying property are divided into four categories):

• a. Oily state: the state of the oil film.
• b. Soft state: the state in which a mark is left after lightly wiping the oil film on the oil-coated test piece with a fingertip is the soft state.
• c. Finger-touch dry state: the state in which the fingertip is not contaminated by the sample after lightly touching the center of the coated test piece with a fingertip is the finger-touch dry state.
• d. Non-adhesive state: the state in which no mark is left on the coating after lightly rubbing the center of the coated test piece with a fingertip is the non-adhesive state.

Calculation formula: not provided in the available source.

10. Precision

Not provided in the available source.

11. Report

Report the test results according to the oily state, soft state, finger-touch dry state and non-adhesive state in clause 7.1.

12. Referenced documents

• SH/T 0218 Preparation method of test specimens for rust-preventive oil and grease tests
• Clause 5.20 in JIS K 2246-89 "Rust-preventive oil" (reference adoption)

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