Numerical Simulation of Sand Mold Casting Process for Steel Casting Shell
Steel castings are widely used in mining machinery, transportation, locomotive traction, lifting machinery, and wind power fields. Due to its […]
Steel castings are widely used in mining machinery, transportation, locomotive traction, lifting machinery, and wind power fields. Due to its […]
1. Test results Workmanship Standards Tensile strength (≥ 655)/MPa Yield strength (≥ 551)/MPa Elongation (≥ 18)/% Reduction of area (≥
1. Quality heat treatment welding process after welding According to the commonly used welding specifications for steel castings, ASME IX
The research project product is a cast steel component for the supporting shell of a large-scale oil and gas wellhead
Blowout preventer is one of the important well control equipment, which is used to control the wellhead pressure during drilling,
1. For shrinkage and crack defects around the shaft hole For defects such as shrinkage and cracks around the shaft
Based on the above investigation, it is determined that the fracture at the axle hole of the front support steel
The fracture location is at the hole of the front support steel casting, where the design safety factor is relatively
From Figure 1, it can be seen that the upper part of the front support steel casting shaft hole is
The production process of front support steel castings is as follows: molding – melting – casting – unpacking – sand
Certain type of 30t excavator has experienced several instances of cracking and failure of the front support during casting. The
The acceleration of urbanization in China has promoted the increasing demand for infrastructure construction such as highways and railways, as
1. Process Measures (1) The riser on the long platform of the support steel casting was originally placed in the
1. Basic information of steel castings Support type steel castings, material: ZG310-570, unit weight: 12.8kg, structural characteristics: support structure, with
After pouring, the internal quality and surface quality of the IP inner cylinder steel casting meet the technical requirements, which
CAE simulation of casting process can increase design functions, reduce design costs, and shorten design cycles; And continuously optimize the
Due to the small space and large wall thickness in the steam inlet chamber of the inner chamber of the
Due to the adoption of a wall riser process for the medium pressure inner cylinder steel casting, the main core
In order to achieve feeding of the riser to the casting, it is necessary to ensure that the solidification time
Due to the high pouring temperature of steel castings, which typically ranges from 1520 to 1620 ℃, the surface of
The causes of casting defects in the trial production of guide rail steel castings were analyzed, and the specific results
The material of the guide rail steel castings is ZG32MnMo. Using the company’s current 3T alkaline arc furnace smelting and
Casting shrinkage refers to the shrinkage of the solidification and cooling process of liquid metal, which causes the dimensions of
Casting shrinkage refers to the shrinkage of the solidification and cooling process of liquid metal, which causes the dimensions of
The solidification time of a steel casting depends on the ratio of its volume to surface area, which is called
Cast steel has high pouring temperature, poor fluidity, and strong thermal impact and scouring force on the sand mold caused
Determining the pouring position is an important step in casting process design, which is related to the internal quality of
1. Difficulty in mold filling of steel castings According to the casting process manual, when the maximum contour size of
1. Structural characteristics The structure of the guide rail steel casting is shown in figure, with the following structural features.
Based on the analysis of the structural characteristics and casting process difficulties of a certain equipment’s steel casting guide rail,