casting defects

Defects of sand inclusion and scab in steel casting and preventive measures

zhycasting / February 29, 2020

Sand inclusion refers to that there is a layer of metal lump or sheet on the surface of the casting, […]

casting defects, scab defect, steel casting

Surface casting defects of die casting (part 3)

zhycasting / February 28, 2020

7 Discoloration and spots (1) characteristics: There are different colors and spots on the casting surface. (2) Causes: ① Improper

casting defects, die casting

Prediction of several main casting defects

zhycasting / February 25, 2020

1) Prediction of shrinkage porosity and porosity Shrinkage cavity and shrinkage porosity are the holes that appear when the temperature

casting defects

Surface casting defects of die casting (part 2)

zhycasting / February 24, 2020

4.Casting deformation (1) characteristics: ① Overall deformation or local deformation; ② the geometric drawing of the die casting is inconsistent.

casting defects, casting deformation, die casting

Surface casting defects of die casting (part 1)

zhycasting / February 22, 2020

1 casting strain (1) characteristics: ① Along the opening direction, the surface of the casting shows a line like scratch

casting defects, die casting

Prevention methods of non spheroidizing or bad spheroidizing defects of ductile iron parts

zhycasting / February 21, 2020

Features: the fracture surface of the casting is gray black, and the mechanical properties are obviously low. Through metallographic examination,

casting defects, ductile cast iron

Influence factors of die casting defects

zhycasting / February 15, 2020

Thinking of solving die casting defects Because the causes of each defect come from many different influencing factors, so in

casting defects, die casting

Prevention of graphite floatation defects in iron castings

zhycasting / February 14, 2020

Features: a layer of clear and dense black spots can be seen on the upper surface of the fracture surface

cast iron, casting defects

News Scientific

Review the rationality of casting structure from the aspect of avoiding defects

zhycasting / February 13, 2020

The casting process of part structure usually refers to that the structure of the part itself should meet the requirements

casting defects

How to prevent the defect of broken fast graphite in ductile iron casting

zhycasting / February 12, 2020

(1) The influence of chemical composition on carbon equivalent is the biggest. In heavy section ductile iron, carbon equivalent should

casting defects, ductile iron casting

Common defects and prevention of metal mold casting

zhycasting / February 11, 2020

(1) Casting pinhole Measures to prevent pinholes: a. It is strictly prohibited to use polluted cast aluminum alloy materials, materials

casting defects, metal mold casting

Causes and prevention of anti white defects in ductile iron casting

zhycasting / February 10, 2020

Anti whitemouth phenomenon On the section of iron castings, the opposite phenomenon of normal section appears. In the central part

casting defects, ductile iron casting

Floating defect of graphite in ductile iron casting

zhycasting / February 9, 2020

Graphite floating means that there are a large number of graphite balls on the upper surface of the casting, and

casting defects, ductile cast iron

The slag inclusion in ductile iron casting

zhycasting / February 8, 2020

There are three types of slag addition: the first type of coarse slag is 2mg · SiO2 + MGS or

casting defects, ductile cast iron

Prevention and treatment of the subcutaneous porosity in ductile iron casting

zhycasting / February 8, 2020

The following measures can be taken: (1) When wet casting is adopted, the moisture content in the sand must be

cast iron, casting defects, ductile iron casting

News Scientific

Features, causes and prevention of the uneven hardness and coarse graphite defects of the castings

zhycasting / February 8, 2020

Features: Coarse graphite: the size of graphite in the metallographic structure is very large, or there is massive graphite, and

casting defects

News Scientific

Defect characteristics, causes and prevention of lower core of casting

zhycasting / February 7, 2020

Features: Poor lower core (core deviation, core dropping, sand squeezing and core breaking) Causes: A. Mask is not adjusted well,

casting core, casting defects

News Scientific

Analysis on the defects of loose and under cast thin wall castings

zhycasting / February 7, 2020

When the wall thickness of high-temperature alloy castings such as adjusting piece and sealing piece is changed from 1.1mm to

casting defects

The phenomenon and cause of air hole under the skin of ball milled cast iron

zhycasting / February 6, 2020

Phenomenon One of the most common defects in the production of nodular cast iron is subcutaneous porosity. Subcutaneous porosity is

cast iron, casting defects

News Scientific

Characteristics, causes and prevention of casting white edge defects

zhycasting / February 5, 2020

Features: The white cast is hard and brittle, and it is difficult to break and turn white Causes: A. Casting

casting defects

Shrinkage and porosity defects of ductile iron casting and their prevention

zhycasting / February 4, 2020

The shrinkage porosity and porosity are more common in ductile iron than in ordinary gray iron. To prevent them, more

cast iron castings, casting defects, casting porosity, casting shrinkage

Features, causes and prevention of casting connection defects

zhycasting / February 4, 2020

Features: After removing the riser, there is less meat in the neck of the riser. Causes: The shape and size

casting defects

Characteristics, causes and prevention of casting porosity

zhycasting / February 3, 2020

Features: Invasive pore: the pore size is generally large, in the shape of round, ball or pear; the pear shaped

casting defects, casting porosity

Internal casting defects of die casting (part 2)

zhycasting / February 2, 2020

6 Non metallic hard point (1) Features and inspection methods: In the process of machining or after machining, the appearance

casting defects, die casting

Other defects of steel casting and preventive measures

zhycasting / February 2, 2020

1.Deformation Long and plate castings are easy to deform. After some castings are processed, they will deform after a period

casting defects, steel casting

Characteristics, causes and prevention of shrinkage cavity and porosity in casting

zhycasting / February 2, 2020

Features: Shrinkage cavity: the hole with large volume, rough wall surface and irregular shape in the casting Shrinkage porosity: a

casting defects, casting porosity

Characteristics, causes and prevention of casting sand hole and sand squeeze defects

zhycasting / January 31, 2020

Features: A cavity or apparent lack of flesh containing sand particles on or within the surface of a casting Causes:

casting defects

Shrinkage and porosity defects in steel casting and preventive measures

zhycasting / January 31, 2020

In the thick section of the casting, at the hot spot or the axis where the final solidification takes place,

casting defects, steel casting

Defect characteristics, causes and prevention of casting draft

zhycasting / January 30, 2020

Features: During the molding operation, there is sand sticking on the formwork, and the mold cavity has such phenomena as

casting defects, casting draft

Blowhole defects and preventive measures in steel casting

zhycasting / January 30, 2020

Inside, on or near the surface of the casting, there are smooth holes of different sizes, round, long and irregular

casting defects, steel casting