GB/T 42603.2-2023Medium temperature pattern material for investment casting —Part 2: Test method of application performance (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 second 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 Materials for Investment Casting" aims to establish that the physical properties and performance testing of medium temperature mold materials should follow 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 flexural strength, surface hardness, thermal deformation and thermal stability, dehydration, and surface depression of medium-temperature molding materials for investment casting Or shrinkage, creep resistance and other performance test methods.

This document is applicable to the performance test 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 6682-2008 Analytical laboratory water specifications and test methods

GB/T 14235.2 Low-temperature molding materials for investment casting Part 2: Test methods for serviceability

GB/T 15894-2008 Chemical Reagent Petroleum Ether

3 Terms and Definitions

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

4 Bending strength test method

The determination of flexural strength shall be carried out according to the provisions of GB/T 14235.2.

5 Surface hardness test method

The determination of surface hardness shall be carried out in accordance with the provisions of GB/T 14235.2.

6 Thermal deformation and thermal stability test methods

The determination of thermal deformation and thermal stability shall be carried out in accordance with the provisions of GB/T 14235.2.

7 Dehydration test method