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GB/T 21872-2008 English PDF

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GB/T 21872-2008: Sulphonic acid hardener for foundry no-bake furan resin
Status: Valid
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GB/T 21872-2008English209 Add to Cart 3 days [Need to translate] Sulphonic acid hardener for foundry no-bake furan resin Valid GB/T 21872-2008

PDF similar to GB/T 21872-2008


Standard similar to GB/T 21872-2008

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Basic data

Standard ID GB/T 21872-2008 (GB/T21872-2008)
Description (Translated English) Sulphonic acid hardener for foundry no-bake furan resin
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G71
Classification of International Standard 83.040.20
Word Count Estimation 9,915
Date of Issue 2008-05-14
Date of Implementation 2008-10-01
Regulation (derived from) National Standard Approval Announcement 2008 No.8 (Total No.121)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the casting self-hardening furan resin acid curing agent Model and labeling, requirements, test methods, inspection rules, signs, packaging, transport and storage. This standard applies to toluene, xylene sulfonate obtained from furan resin casting acid curing agent.

GB/T 21872-2008: Sulphonic acid hardener for foundry no-bake furan resin

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Sulphonic acid hardener for foundry no-bake furan resin ICS 83.040.20 G71 National Standards of People's Republic of China Casting self-hardening furan resin with sulfonic acid curing agent Posted 2008-05-14 2008-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee rubber chemical additives Rubber and Technical Committee (SAC/TC35/SC12) Centralized. This standard is mainly drafted by. Jinan-quan Group Co., Ltd. Units involved in the drafting of this standard. Deyang Dongqi Resin Co., Ltd. The main drafters of this standard. Philip Chok, Liu Zhao Jian, junior river. This standard is the first release. Casting self-hardening furan resin with sulfonic acid curing agent

1 Scope

This standard specifies the casting self-hardening furan resin using a sulfonic acid type curing agent and the labeling of products, requirements, test methods, inspection rules, marks, Packaging, transportation and storage. This standard applies to toluene, xylene sulfonated obtained from casting furan resin with sulfonic acid curing agent.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 190 packaging and marking of dangerous goods GB/T 191 Packaging - Pictorial signs (GB/T 191-2008, ISO 780.1997, MOD) GB/T 265 Petroleum products - Determination of kinematic viscosity and calculation of dynamic viscosity Preparation of GB/T 601 chemical reagent standard titration solution GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) Representation GB/T 1250 limit values \u200b\u200band the method of determining GB/T 4472-1984 Chemical density, relative density measurement General GB/T 6678 General Principles for Sampling Chemical Products GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987)

3 Model and labeling

Casting self-hardening furan resin with sulfonic acid curing agent are classified according to different temperature of the sand. Model. GH01, GH02, GH03, GH04, GH05, GH06, GH07, GH08 Marked as follows. Hardener  Sulfonic acid XX Variety code (according to sand temperature varies from high to low temperature expressed in Arabic numerals) Different types of curing agents shown in Table 1 Scope. Table 1 different types of curing agents Scope Model GH01 GH02 GH03 GH04 GH05 GH06 GH07 GH08 Applicable temperature range sand / > 40 40 to 35 35 to 30 30 to 25 25 to 20 20 to 15 15 to 10 < 10

4 Requirements

Casting self-hardening furan resin with sulfonic acid curing agent shall comply with the technical requirements shown in Table 2.

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