MT 76-2011[MT/T 76-2011] Emulsifying oil, concentrate fluid and high-water content hydraulic fluid used for powered support (English PDF)

Foreword

Clauses 5.1, 5.2, 5.7, 5.14 and 5.15 of this Standard are voluntary; and the rest

are compulsory.

This Standard is a revision of MT 76-2002, Emulsifying oil concentrate and high-water

content hydraulic fluid used for powered support and prop. This Standard replaces MT

76-2002 from the data of implementation.

Compared with MT 76-2002, the major changes of this Standard are as follows.

-- the standard name is changed, in which "and prop" is deleted and "concentrate"

is changed into "concentrate liquid" (see the cover and text of 2002 edition and

this edition);

-- the product type specification is changed (see 4.2; 4.2 of 200d edition);

-- the relevant content of solid-state powder concentrate is deleted (see 5.2 of 2002

edition);

-- the technical requirements for open cup flash point are modified (see 5.3; 5.1.3

of edition 2002);

-- the technical requirements and test methods including odour, antifoaming

performance and refractometer reading (see 5.2, 5.14, 5.15, 6.3, 6.15 and 6.16);

-- the pH technical requirements are modified (see 5.8; 5.3.2 of 2002 edition);

-- the "preparation of test water" is added (see 6.1);

-- the test conditions and methods are modified (see 6.2, 6.4, 6.6, 6.9, 6.11 and 6.12;

6.1, 6.3, 6.4, 6.7, 6.9 and 6.10 of 2002 edition).

Annex A and Annex B of this Standard are normative.

This Standard was proposed by China Coal Industry Association.

This Standard shall be under the jurisdiction of the National Technical Committee on

Special Equipment for Coal Industry and Coal Mines.

China Coal Research Institute Testing Sub-Institute is responsible for the drafting of

this Standard; China Coal Research Institute Industrial Oils Business Division and

Datong Yunyan Petrochemical Co., Ltd. participate in the drafting.

1 Scope

This Standard specifies. the emulsifying type (HFAE) and solution type (HFAS) high-

water content hydraulic fluids; and the terms and definitions, product classification,

technical requirements, test methods, inspection rules and marking, packaging,

transportation and storage of emulsifying oils and concentrate fluids for the preparation

of the hydraulic fluid.

This Standard applies to the high-water content hydraulic fluids for hydraulic supports,

outside-pourable single hydraulic props, etc. and the emulsifying oils and concentrate

fluids for the preparation of the hydraulic fluids.

2 Normative references

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition dated applies to this document. For

undated references, the latest edition of the referenced documents (including all

amendments) applies to This Standard.

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 11143-2008, Standard test method for rust-preventing characteristics of

Weigh accurately 2.922 g of sodium chloride (of analytical purity); dissolve in distilled

water or deionized water; and use distilled water or deionized water to dilute to 1 L.

5 W/220 V incandescent light bulb to irradiate the side of the colorimetric tube; and

observe the filament through the test sample. if the filament can be seen clearly, it is

transparent; if the filament is invisible or blurry, it is non-transparent. Reverse the

colorimetric tube; the film formed on the wall of the colorimetric tube shall be uniform.