Control of common defects in lost foam casting of aluminum alloy
Aiming at the common defects in the process of aluminum alloy lost foam casting, the following measures have been widely […]
Aiming at the common defects in the process of aluminum alloy lost foam casting, the following measures have been widely […]
1. Grid division and process parameter setting The three-dimensional modeling software (ugnx6. O) is used to accurately model the liner
The size of ball mill liner in lost foam casting should consider the factors such as convenient handling, loading and
The lost foam casting thin-walled gray cast iron gearbox shell casting with the improved gating system is adopted. The qualification
Flywheel is a part of engine components. Its product surface is fully processed. The dynamic balance test of parts. Although
Under the same production conditions, the process yield and scrap rate of three different casting process schemes were obtained. Scheme
1. Production of heat subsidy for sand casting Mix the powdered heating material and binder evenly according to the required
The reasonable design of the exhaust system of sand mold casting sand core should comprehensively consider the exhaust hole and
The design of exhaust system of sand mold cavity can be divided into three parts: pouring riser, air outlet, air
The hardness changes of gray cast iron after laser melting and impact at different annealing temperatures are shown in the
Compared with ordinary sand casting, the solidification characteristics of lost foam casting are also different, mainly in the following aspects:
Through the analysis of the physical parameters of the sand mold casting, it is determined that the quality of the
1. Foam casting for lost foam casting The molding of polystyrene bead mold can increase the foam density for improving
The nucleation and growth of gray cast iron graphite are gradually formed during heating. The nucleation position of gray cast
The material of the bearing seat is ZG310-570, and the production nature is mass production. 1. Sand casting process scheme
The X-ray diagram of the surface of gray cast iron sample after laser shock melting is as follows. It can
Large bearing pedestals are used in power plants, petrochemical, metallurgy, shipbuilding and equipment manufacturing industries, such as steam turbine rotor
The figure shows the hardness of ZGMn13 and zgmn17 under different water toughening treatments. It can be seen that the
The combination process of lost foam casting nodular cast iron reducer shell is shown in the figure. The design process
The wet sand mold casting process of nodular iron crankshaft is mainly divided into two parts: sand mold preparation and
For the liquid shrinkage of nodular cast iron, the macro performance is the decline of molten iron liquid level, and
1. PLC software design PLC control software includes interface management program and monitoring program. The interface management program is connected
1. Increase the gate section size in the gating system Gate size in main core: changed from 33.5 / 34.6
1. Ordinary white cast iron Ordinary white cast iron can only be used in as cast state, and carbon atoms
1. Test scheme design Select specific nodular cast iron and specific process as the test object (as shown in Figure
Shrinkage porosity and shrinkage cavity are the most common defects in the process of sand casting, and they are also
1. Original mold design structure The original mold structure design of t9000-c iron mold sand coated casting cylinder block in
In order to reconfirm the defects of the nodular iron casting and the rationality of the analysis results, the CAE
1. Casting process In order to ensure the smooth filling of molten iron and prevent the occurrence of defects such
The three-dimensional models of casting, sand mold and cold iron are meshed by finite element method. After being imported into