SH/T 0211-1998 Test method for low-temperature adhesion of rust-preventive oils and greases

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 0211-1998
• Chinese title: Test method for low-temperature adhesion of rust-preventive oils and greases
• English title: Rust preventive oils and greases — Test method of low temperature adhesive property
• Replacement relationship: replaces SH/T 0211-92 (the source text writes “replaces SH/T 0211- J2”, requires confirmation against the source standard (source-text extraction))
• Adoption relationship: equivalent adoption of clause 5.22 “Test method for low-temperature adhesion of rust-preventive oils and greases” in Japanese Industrial Standard JIS K2246-1994 Rust-preventive oil
• Approval/implementation: approved by China Petrochemical Corporation 1998-06-23, implemented on 1998-12-01; (confirmed in 2004)
• Technical administration: under the technical administration of the Research Institute of Petroleum Processing, China Petrochemical Corporation
• Drafting organization: Research Institute of Maoming Petrochemical Company, Sinopec
• Main drafters: Huang Chenggang, Zhuang Xiaohua
• First issued: 1992 year 5 month

2. Scope of application and non-applicability

• This standard specifies a method for testing the adhesion of rust-preventive oils and rust-preventive greases to metals under low-temperature conditions.
• This standard applies to rust-preventive oils and rust-preventive greases.
• Non-applicable scope: not provided in the available source.

3. Method principle

Place a metal test specimen coated with rust-preventive oil or grease in a low-temperature chamber; after the specified test period, make scratches with a scratch tester and check whether the film enclosed by the lines has peeled off, thereby judging the low-temperature adhesion of the rust-preventive oil or grease.

4. Reagents and materials (purity / preparation)

• 5.1 Petroleum ether: 60～90 ℃, analytical reagent.
• 5.2 Anhydrous ethanol: chemical reagent.
• 4.2.1 Test specimen: the material and specifications meet the requirements for the A test specimen in method A of SH/T 0218.
• 4.2.2 Single-edge blade: Feiying brand single-edge safety blade.
• Preparation method: not provided in the available source.

5. Apparatus and equipment

• 4.1.1 Low-temperature chamber: composed of a refrigeration device, a temperature regulation and control device, and a thermometer. The chamber meets the following technical requirements:
  • 4.1.1.1 Thermometer: glass mercury thermometer, −30～60 ℃ (the thermometer range and unit are unclear in the source transcription and require verification), with a scale division of 0.5 ℃. When installed, the mercury bulb shall be in the exact center of the exposed area inside the chamber.
  • 4.1.1.2 Temperature of the exposed area inside the chamber: −20 ℃±2 ℃.
• 4.1.2 Scratch tester: four new single-edge blades of the same specification are fixed at an interval of 3.2 mm; its main structure is shown in Figure 1 (Figure 1: 1— single-edge blade; 2— positioning bolt; 3— fastening screw; 4— fixing plate; unit: mm).
• 4.1.3 Culture dish: diameter 100 mm.

6. Recommended operating conditions

• Temperature of the exposed area inside the low-temperature chamber: −20 ℃±2 ℃.
• Retention time of the test specimen in the low-temperature chamber: 1 h.
• Scratch length: 25 mm, reaching the metal surface.
• Other operating conditions: not provided in the available source.

7. Sampling and specimen preparation

• 6.1 Grinding, cleaning, and oil coating of the test specimen shall be carried out as specified in SH/T 0218. Two test specimens are used for each sample each time.
• Other sampling provisions: not provided in the available source.

8. Analysis procedure

• 6.2 When the temperature of the low-temperature chamber reaches −20 ℃±2 ℃, place the oil-coated test specimen, after draining for the specified time, flat in a culture dish, put it together with the scratch tester into the low-temperature chamber, close the door, and maintain at this temperature for 1 h.
• 6.3 After the time is reached, quickly use the scratch tester inside the chamber to scratch four parallel lines of length 25 mm on the test specimen film, reaching the metal surface, and then scratch another four lines perpendicular to the initial four lines to form square grids.

9. Qualitative and quantitative determination and calculation formula

• Result judgment (Chapter 7): check whether the film in the square grids on the two test specimens has lifted or peeled off. If neither has lifted or peeled off, it is judged as acceptable. Otherwise, it is judged as unacceptable. If one of the test specimens is considered to have lifted or peeled off, retest. If, in the retest result, more than one test specimen is again confirmed to have lifted or peeled off, it is judged as unacceptable.
• 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/T 0218 Preparation method of test specimens for rust-preventive oil and grease tests

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-reference Q&A