GB/T 42603.1-2023Medium temperature pattern material for investment casting—Part 1: Test method of physical properties (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 is the first part of GB/T 42603 "Mold Materials for Investment Casting at Medium Temperature". GB/T 42603 has issued the following parts.

--- Part 1. Physical property test methods;

--- Part 2. Use performance test methods.

Introduction

The establishment of the standards for the performance test methods of medium-temperature mold materials in investment casting is to establish a set of optimal performance testing regulations for the production of mold materials.

For the detection of the physical properties of medium temperature mold materials for investment casting, it is required from the aspects of test principle, test equipment, test procedures, test data processing, etc. Notes provide guidance.

GB/T 42603 "Medium Temperature Mold Material for Investment Casting" aims to establish that the physical properties and serviceability of the medium temperature mold material should be tested according to The principles and related rules are proposed to be composed of two parts.

--- Part 1. Physical properties test methods. The purpose is to establish the general requirements and tests applicable to the physical properties of medium temperature mold materials. test method.

--- Part 2. Use performance test methods. The purpose is to establish the general requirements and tests applicable to various performances of medium temperature mold materials. test method.

GB/T 42603 "Medium Temperature Mold Materials for Investment Casting" clarifies the test methods for the physical properties and performance of medium temperature mold materials through two parts.

Law. By establishing the test principles, test equipment, test procedures and treatment of test results for various properties of medium-temperature mold materials, the testers can Operate more clearly and accurately, so as to strictly inspect the quality of mold materials, and only by controlling the quality of important auxiliary materials for casting can manufacturing To produce high-quality castings, to make effective use of the technical guidance of this document, to provide a basis for improving casting technology and processes, and to promote investment casting Control and improve the quality of manufactured products, and provide technical support for the industrial upgrading of the equipment manufacturing industry.

1 Scope

This document specifies the physical properties such as dropping point, freezing point, linear shrinkage, softening point, rotational viscosity, and ash content of medium-temperature mold materials for investment casting. test method.

This document is applicable to the testing of the physical properties of medium temperature mold materials for investment casting.

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.

GB/T 514-2005 Specifications for liquid-in-glass thermometers used in petroleum product testing

GB/T 1800.1-2020 Geometric Product Specifications (GPS) Linear Dimensional Tolerances ISO Code System Part 1: Tolerances, Basis of Deviation and Fit

GB/T 14235.1 Low-temperature molding materials for investment casting Part 1: Test methods for physical properties

3 Terms and Definitions

This document does not have terms and definitions that need to be defined.

4 Dropping point test method