GB/T 269-2023Determination of cone penetration of lubricating greases and petrolatum (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document replaces GB/T 269-1991 "Measurement of Penetration of Lubricating Grease and Petroleum Grease". Compared with GB/T 269-1991, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows:

a) Changed the maximum measurable cone penetration value from "620 units" to "500 units" (see Chapter 5, 1991 edition Chapter 1);

b) Added the terms "penetration" and "cone penetration" (see 3.1, 3.2);

c) The chapter "Classifications, Processes and Limitations" has been added (see Chapter 5);

d) The size tolerance of the cone has been changed (see Figure 2, Figure 3, Figure 4, Figure 5, Figure 2, Figure 3, Figure 4, Figure 5 of the 1991 edition);

e) Changed the size of the 1/2 scale cone grease worker A from "phi38.5mm" to "phi36.5mm" (see Figure 7, 1991 version of Figure 7);

f) Changed the size of the grease cutter blade from "68mm×185mm" to "65mm×185mm" (see Figure 9, Figure 9 of the 1991 edition);

g) Added the chapter "Sampling" (see Chapter 7);

h) Added 1/2 and 1/4 scale cone method "general rules" (see 9.1);

i) The precision of full-scale cone penetration has been changed (see Table 1, Table 1 of the 1991 edition);

j) The chapter "Test Report" has been added (see Chapter 14).

This document is modified to adopt ISO 2137:2020 "Measurement of Penetration of Lubricating Grease and Petroleum Grease".

The technical differences between this document and ISO 2137:2020 and their reasons are as follows:

---Replace ISO 23572 (see Chapter 7) with the normatively quoted SH/T 0229 to adapt to my country's technical conditions and increase operability (see Chapter 2).

This document has the following editorial changes compared with ISO 2137:2020.

--- Added an informative reference to GB/T 7631.8-1990 in Chapter 5, and added "References".

Caution --- The use of this document may involve some hazardous materials, equipment and operations, and this document does not point out all possible safety hazards. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations.

1 Scope

This document describes a method for determining the consistency of lubricating greases and petroleum greases by the penetration method.

This document applies to grease and petroleum grease (Vaseline).

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

SH/T 0229 Sampling method for solid and semi-solid petroleum products

3 Terms and Definitions

The following terms and definitions apply to this document.