JB/T 53440-1999
Product Quality Grading of Washed Natural Silica Sand for Foundry
铸造用水洗天然硅砂 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 分等要求 → 4 试验方法 → 5 评定方法 Foreword → 1 Scope → 2 Normative References → 3 Grading Requirements → 4 Test Methods → 5 Evaluation Methods
Scope
This standard specifies the quality requirements, test methods, and evaluation methods for grading of washed natural silica sand for foundry. This standard applies to natural silica sand for foundry processed by washing, scrubbing, or flotation.
本标准规定了铸造用水洗天然硅砂分等的质量要求、试验方法和评定方法等。本标准适用于经水洗、擦洗或浮选加工的铸造用天然硅砂。
Normative References
Keywords
Application Summary AI generated
Foundry manufacturers, quality inspection agencies, and users apply this standard to grade washed natural silica sand. They classify the sand into premium, first-grade, and qualified grades based on indicators such as silica content, clay content, angularity factor, and grain size distribution. This standard is important for ensuring casting quality and regulating the silica sand market.
铸造行业的生产企业、质检机构和用户使用本标准来对水洗天然硅砂进行质量分等。他们依据本标准中的二氧化硅含量、含泥量、角形因数和粒度组成等指标，将硅砂划分为优等砂、一等砂和合格砂三个等级。该标准对于保证铸件质量、规范硅砂市场具有重要意义。
AI Summary AI generated
This standard JB/T 53440-1999 specifies the product quality grading requirements for washed natural silica sand for foundry, applicable to natural silica sand processed by washing, scrubbing, or flotation. It classifies sand by use into types for steel, iron, and non-ferrous alloy castings, and by quality into premium, first-grade, and qualified grades. Key grading indicators include silica content, clay content, angularity factor, and grain size distribution. Test methods reference relevant national standards, and each grade must fully meet the specified indicators. This standard replaces JB/T 53440-94 with no major technical changes.
本标准JB/T 53440-1999规定了铸造用水洗天然硅砂的产品质量分等要求，适用于经水洗、擦洗或浮选加工的铸造用天然硅砂。标准将硅砂按用途分为铸钢、铸铁和非铁合金用三类，并按质量分为优等砂、一等砂和合格砂。主要分等指标包括二氧化硅含量、含泥量、角形因数和粒度组成。试验方法引用相关国家标准，评定要求各等级必须完全达标。该标准替代了JB/T 53440-94，技术内容无重大变化。
Key Sentences extracted from text
本标准规定了铸造用水洗天然硅砂分等的质量要求、试验方法和评定方法等。
铸造用天然硅砂按用途分为铸钢用天然硅砂、铸铁用天然硅砂和非铁合金铸造用天然硅砂。
铸钢用天然硅砂和铸铁用天然硅砂分别按其质量分为优等砂、一等砂和合格砂三个等级。
铸造用天然硅砂的主要粒度组成部分：三筛不小于75%，四筛不小于85%。
各等级的铸造用天然硅砂必须完全达到相应的等级指标。
This standard specifies the quality requirements, test methods, and evaluation methods for grading of washed natural silica sand for foundry.
Natural silica sand for foundry is classified by use into natural silica sand for steel castings, natural silica sand for iron castings, and natural silica sand for non-ferrous alloy castings.
Natural silica sand for steel castings and natural silica sand for iron castings are respectively divided into three grades: premium sand, first-grade sand, and qualified sand according to their quality.
The main grain size components of natural silica sand for foundry: not less than 75% for three sieves, not less than 85% for four sieves.
Natural silica sand for foundry of each grade must fully meet the corresponding grade indicators.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改，主要技术内容没有变化。
- Editorial modifications were made to the original standard, with no changes to the main technical content.