MT 76-2011 in English

Emulsifying oil, concentrate fluid and high-water content hydraulic fluid used for powered support

1 Scope

This standard specifies the terms and definitions, product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of emulsified (HFAE) and solution-type (HFAS) high-water content hydraulic fluids and emulsifying oils or concentrate fluids for preparing the hydraulic fluids.

This standard is applicable to high-water content hydraulic fluids for powered supports, external injection single hydraulic props, etc., and the emulsifying oil and concentrate fluid used to prepare the hydraulic fluid.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendment) applies.

GB 265-1988 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity
GB/T 510-1983 Petroleum products - Determination of solidification point
GB/T 3142 Lubricants - determination of load-carrying capacity (four balls method)
GB/T 3536-2008 Petroleum products - Determination of flash and fire points - Cleveland open cup method (ISO 2592:2000, MOD)
GB/T 4756 Method for manual sampling of petroleum liquids (GB/T 4756-1998, ISO 3170:1988, NEQ)
GB/T 5231-2001 Wrought copper and copper alloys chemical composition limits and forms of wrought products
GB/T 7631.2 Lubricants, industrial oils and related products (class L) - Classification - Part 2: Family H (Hydraulic systems) (GB/T 7631.2-2003, ISO 6743-4:1999, IDT)
GB/T 11143-2008 Standard test method for rust-preventing characteristics of inhibited mineral oil in the presence of water (ASTM D665-03, MOD)
GB/T 14832 Test methods for compatibility between hydraulic fluids and standard elastomeric materials (GB/T 14832-2008, ISO 6072:2002, MOD)
SH 0004 Solvent oil for rubber industry (SH 0004-1998, TOCT 443-1976, NEQ)
SH/T 0069 Engine antifreeze, antirust and coolant pH determination method (SH/T 0069-2006, ASTM D1287-1985, NEQ)
SH 0164 Rules for packaging, storage, transportation and delivery acceptance of petroleum products

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

3.1
emulsifying oil

“oil” that may be uniformly dispersed in water to form an oil-in-water emulsion, which is generally composed of mineral oil and water, emulsifier, antirust agent, lubricant and other additives

3.2
concentrate fluid

liquid substance that can be dissolved in water to form a solution diluent, which is generally composed of water, water-soluble antirust agent, anticorrosion agent, lubricant and other additives

3.3
high-water content hydraulic fluid

oil-in-water emulsion prepared by emulsifying oil and 90% (mass ratio) or more water or solution-type diluent prepared by concentrated solution and 90% (mass ratio) or more water

4 Product categorization

4.1 Product categories

According to the types of high-water content hydraulic fluids they can be used for, products are divided into two categories: emulsifying oil and concentrate fluid.

Each category is divided into 8 grades according to the highest hardness of the applicable water quality, and its grade codes are 5, 10, 15, 20, 25, 30, 35 and 40.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification standards
5 Judgment logic and guidance
6 Labelling
Annex A (Informative) Judgment logic and guidance
Annex B (Normative) Allocation of label elements
Annex C (Normative) Aerosol classification standards and label elements
Annex D (Informative) Aerosol hazard statements and precautionary statements
Annex E (Informative) Examples of aerosol label