Casting Process Evaluation
Applicable materials: Suitable for various casting metals and alloy materials such as cast steel, cast iron, alloy steel, stainless steel, aluminum alloy, copper alloy, magnesium alloy, zinc alloy, etc.
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Product Introduction

Scope of evaluation
Applicable materials: Suitable for various casting metals and alloy materials such as cast steel, cast iron, alloy steel, stainless steel, aluminum alloy, copper alloy, magnesium alloy, zinc alloy, etc.
Applicable objects: covering sand castings, investment precision castings, metal castings, pressure castings, lost foam castings, valve bodies, pump bodies, cylinder bodies, engineering machinery castings, structural component blanks, and pressure equipment castings.
Applicable scenarios: Used for verifying casting process schemes, molding and core making, melting and pouring, evaluation of riser and pouring system design, quality acceptance of castings, analysis of casting defects, process optimization, and evaluation of batch production stability.
Evaluate the project
Rationality evaluation of casting process: evaluation of molding and core making process, melting system, pouring temperature and speed, pouring system, riser cold iron, sand properties, and cooling system.
Internal quality evaluation: Inspection of internal defects such as porosity, shrinkage, porosity, slag inclusion, inclusions, cracks, segregation, and looseness, as well as non-destructive testing compliance assessment.
Metallographic structure and material evaluation: conformity assessment of matrix structure, graphite morphology, grain size, segregation degree, melt purity, and chemical composition.
Mechanical performance evaluation: Testing and evaluation of indicators such as tensile strength, yield strength, hardness, impact toughness, and elongation at break.
Dimensional accuracy and positional tolerance evaluation: detection and evaluation of external dimensions, wall thickness, machining allowance, coaxiality, flatness, positional accuracy, etc.
Surface quality evaluation: Inspection and evaluation of appearance defects such as cold insulation, insufficient pouring, sand adhesion, cracks, sand holes, flash edges, and scars.
Melting and casting quality evaluation: furnace pre-treatment, spheroidization effect, composition control, casting stability, and melt quality evaluation.
Analysis and determination of casting defects: analysis of the causes of defects such as shrinkage, porosity, slag inclusion in pores, cracks, cold shut, deformation, and segregation.
Post processing compatibility evaluation: evaluation of the compatibility between subsequent processes such as sand cleaning, heat treatment, correction, shot blasting, and casting technology.
Batch molding stability evaluation: evaluation of casting size consistency, defect rate, first pass rate, and process reliability.

Evaluation standards
GB/T 6414-2017 Dimensional tolerances and machining allowances for castings
GB/T 11352-2022 General Engineering Cast Carbon Steel Parts
GB/T 9439-2020 Grey Iron Castings
GB/T 1348-2018 Ductile Iron Castings
GB/T 1173-2023 Casting Aluminum Alloy
GB/T 6394-2017 Metallographic examination method for metallic materials
GB/T 228.1-2021 Tensile Testing of Metallic Materials Part 1: Room Temperature Test Method
GB/T 229-2020 Metallic Materials - Charpy Pendulum Impact Test Method
NB/T 47010-2017 Carbon and Alloy Steel Castings for Pressure Equipment
JB/T 2435-2019 Basic Terminology of Casting Technology
GB/T 5677-2018 Radiographic Testing of Castings
GB/T 7233.1-2023 Ultrasonic Testing of Castings Part 1: General Purpose Steel Castings
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.
















