Slag inclusion defects of brake shell in Lost foam casting production
Lost foam casting technology is widely used in the foundry industry because of its advantages of small investment, low energy […]
Lost foam casting technology is widely used in the foundry industry because of its advantages of small investment, low energy […]
The solidification process of liquid metal is divided into three phases: liquid phase, solid / liquid phase coexistence and solid
In the solidification process, because of the wide range of crystallization temperature, the basic metal skeleton is formed first when
Geometric modeling The heat transfer between the liquid metal and the pattern occurs during the filling process Where, ρ P
Crawler shoe is the key component of roadheader walking mechanism, which is connected by pin to form crawler shoe chain.
① Because the preparatory work in the early stage of production is not in place, the theoretical negative pressure value
(1) When using polystyrene foam in white mold manufacture, its density is very small, and the labor intensity of the
The refractory coating for lost foam casting consists of refractory aggregate, carrier (solvent), suspending agent, binder and other additives. ①
One layer of refractory coating hung on the outer surface of the foam plastic model is one of the three
The technological process of lost foam casting is divided into white area and black area. (1) the process of lost
Lost foam casting technology is usually referred to as lost foam casting in English, which is also called as lost
5.Buried box with empty shell 5.1 preparation before embedding The inner wall of the roasted hollow shell cavity is smooth,
4.Baking of coating shell The baking of coating shell is the key link of the process. In the process of
Casting Name: 105 type cable head; material: ZG310-570; geometric dimension: 620 mm × 290 mm × 210 mm; single piece
The shell casting process of lost foam casting has cleaned the foam thoroughly and thoroughly through the roasting process before
According to the experimental results of the first two sections, the carburization defects will lead to the excessive chemical composition
The properties of tensile samples were tested by a universal testing machine controlled by microcomputer, and the tensile strength and
Six groups of samples were taken when analyzing surface carburization, and the location of the test point was changed to
In this test, 6 test pieces were poured in the same ladle of molten steel. The chemical composition of molten
By using ProCAST numerical simulation software to study the lost foam casting process of the representative steel and steel bearing
In order to study the carburization defects of steel casting for bridge support, four sampling locations are selected, namely, near
The filling process of lost foam casting is the replacement process of metal liquid and foam pattern. Because the pouring
Using the process plan after the second optimization, the small batch production verification of steel and steel bearing was carried
In order to study the impact resistance of steel castings at different temperatures, three temperature detection conditions, namely normal temperature,
When setting simulation parameters in ProCAST preprocessing section, the following aspects need to be adjusted: (1) The material of cold
In the process of heating and cooling, there will be group increase transformation of steel, which is the fundamental reason
The simulation results show that the safety height of riser is 11.15cm, which is 8.15cm higher than the minimum safety
Mechanical properties refer to the mechanical characteristics of materials under different environments when they bear various external loads (tensile, compression,
It can be seen from Fig. 1 that when the pouring temperature changes from high to low, the safe height
The object of this research is steel steel steel bearings in bridge bearings. The production process is produced according to