Surface casting defects of die casting (part 3)
7 Discoloration and spots (1) characteristics: There are different colors and spots on the casting surface. (2) Causes: ① Improper […]
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Forming method of composite squeeze casting
1. Definition of composite squeeze casting Direct squeeze casting technology pressure directly acts on the surface of liquid metal, the
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Dimensional tolerance of fixture casting
Dimensional tolerance of castings refers to the difference between two allowable limit dimensions of nominal dimensions of castings. Within two
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Basic theory of numerical simulation of forging process
The process of loading metal raw materials with mold and other equipment to produce plastic flow to produce products that
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Prevention of sand hole and casting slag defects in cast iron
Features: small holes filled with mold (core) sand inside or on the surface of defects are called sand holes. If
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Research status of squeeze casting die
The main function of the squeeze casting die in the forming process is to complete the liquid metal forming, to
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Determination of casting process plan for fixture casting
Production conditions, structure and technical requirements of fixture Product production nature – mass production Part material – 35Cr The part
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Research hotspot and direction of EPC
Hot spots 1: reduce or eliminate the casting defects of lead alloy in EPC The biggest problem of making lead
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Raw materials for green sand in sand casting
Green sand is composed of original sand, clay, additives and water in a certain proportion. The commonly used feeding sequence
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History and development of investment casting technology in China
Lost wax casting is now called investment casting. It is a kind of casting technology with little or no cutting.
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Research status of melt conveyor in Squeeze Casting
In the early application of squeeze casting technology, the transportation of molten metal is basically manual transportation and mold filling.
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Characteristics of metal casting, sand casting and die casting
Casting can also be divided into gravity casting and pressure casting according to the pouring process of liquid metal. Gravity
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The engine cylinder block and cylinder head produce the casting veins
Usually in the inner surface or hot spot of the casting, such as the water jacket cavity of the cylinder
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Research status of Squeeze Casting Technology
A large number of researches and applications have been carried out on the squeeze casting forming technology in foreign countries.
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Prediction of several main casting defects
1) Prediction of shrinkage porosity and porosity Shrinkage cavity and shrinkage porosity are the holes that appear when the temperature
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Surface casting defects of die casting (part 2)
4.Casting deformation (1) characteristics: ① Overall deformation or local deformation; ② the geometric drawing of the die casting is inconsistent.
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Application and analysis of carbon emission in sand casting production system
1. Application case carbon emission estimation The material of a casting is HT150, which is produced in batches. As shown
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Characteristics of wet mold and dry mold sand casting
Clay sand mold can be divided into wet mold, dry mold and surface drying mold. The main differences among the
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Casting process design of casting mould
In casting production, mold is very important. All kinds of process knowledge we talked about before should be included in
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Study on the forming system of compound squeeze casting for large parts
With the rapid development of economy, the domestic demand for large and complex parts is increasing in the fields of
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Carbon emission evaluation function and calculation method of sand casting production system
1. Energy consumption of sand casting production system The carbon emission of sand casting production system is related to energy
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Properties of good casting sand
The material used to make sand mold is called molding material, the material used to make sand mold is called
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Casting process pouring riser, chill and cast steel bar
Using riser, chill and cast steel bar to obtain high quality castings is a common technological measure in foundry production.
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The engine cylinder block and cylinder head produce casting sand holes
Sand hole is also a common defect of cylinder block (cylinder head) casting, which is often found on the upper
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Introduction of numerical simulation method for filling and solidification process of casting
Numerical simulation of casting filling is to analyze the heat transfer phenomenon and forming ability of high temperature liquid metal
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The main factors of cracks in aluminum alloy wheel during low pressure casting
For the same alloy, whether the hub cracks or not often depends on the hub structure, process parameters and mold
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Surface casting defects of die casting (part 1)
1 casting strain (1) characteristics: ① Along the opening direction, the surface of the casting shows a line like scratch
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Sand casting – machine modeling
Machine modeling — the molding machine completes the main actions of sand filling, compaction and touching during the molding process.
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The explanation of the type of gating system in casting process
(1) According to the position of the choke section A closed gating system The closed gating system refers to the
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Rapid sand casting technology of engine cylinder head based on numerical simulation
China’s automobile industry is booming and has become the pillar industry of national economic development. However, China’s automobile industry still