Casting process deformation defects of bed castings
Confirmation of the main factors affecting the casting process deformation defects of bed castings, track and observe the actual production […]
Confirmation of the main factors affecting the casting process deformation defects of bed castings, track and observe the actual production […]
Lost foam casting technology is known as “casting technology in the 21st century” and “green revolution of casting industry”, which
1) In view of the insufficient stiffness of the bottom plate, a stiffener is added at the bottom of the
Generally, the hardness of cylinder liner in the qualified layer is hb225 ~ HB240, and the overall hardness difference of
In the whole pressure pipeline system, valve is the key control device. Its main function is to connect or block
For different casting defects (such as sand sticking, porosity, sintering, veining, shrinkage porosity at hot spot, etc.), the foundry should
In order to verify the correctness of defect cause analysis, the project team carried out process verification test. The test
Diesel engine is widely used, working environment is poor, working time is long. Because the cylinder head of diesel engine
As shown in Figure 1, a low-pressure casting water-cooled housing for electric bus is in the shape of a drum
Metal bending test is a test method to measure the bending plastic deformation ability of metal materials under bending load,
① Because the preparatory work in the early stage of production is not in place, the theoretical negative pressure value
The slag holes are mainly distributed around 2 and 5 turns, accounting for 22.7%; the defect area is large and
The generation of cold shut is directly affected by the temperature of molten iron. At a certain temperature, the design
The air-conditioner of the defective product is mainly located at the highest point of the mold, i.e. 2 and 5
Air conditioner The cold air gap is the gap that penetrates or does not penetrate the casting, and the edge
In the molding process of sand coated iron mold, sand collapse and empty shell are the important reasons for sand
(1) The elements with high content of C, O, Al, Si and some other alloy elements are found in the
The whole process from molten iron smelting to casting completion is a complex and irreversible process. In the process of
The main characteristics of the magnetic traces of linear defects detected by MT are mainly linear aggregated magnetic traces with
The main features of magnetic traces of point defects detected by MT. The magnetic traces are scattered and isolated small
The surface slag inclusion defect is the most common and the most difficult to avoid on the surface of gas
The floating of graphite and abnormal shape of graphite in the center is a kind of metallographic structure defect associated
By using ProCAST numerical simulation software to study the lost foam casting process of the representative steel and steel bearing
The main functions of lost foam casting with negative pressure casting are as follows: (1) Compact the dry sand to
According to the position of molten metal introduced into the mold, the pouring methods can be divided into top pouring,
The pouring position of a casting refers to the current state (posture) and position of the casting in the mold,
On the basis of the existing research, there are still many works to be further improved and upgraded. In particular,
The hydraulic valve is an essential component in the hydraulic system. The performance of the hydraulic valve determines the performance
Taking the simplified one hydraulic valve body and the two multi way valve body for loader as the research object,
The drawing shows the shrinkage pore distribution of a series of hydraulic valves made of steel-304 stainless steel with casting