Study on technology of nodular cast iron for automobile hub support based on magma
Starting from the practical application of sand casting production process, the process design and material properties of nodular cast iron […]
Starting from the practical application of sand casting production process, the process design and material properties of nodular cast iron […]
The casting process of hub support is simulated and calculated by using magma simulation software, the shortcomings of the original
There are two main classification methods of gating system: one is divided into closed type, semi closed type and open
The selection of chemical composition should be considered from two aspects: ensuring good mechanical properties and casting properties of castings.
The steam turbine end cover is used to seal the steam in the condensate. It has high requirements on the
In order to obtain nodular cast iron that meets the requirements of high strength and toughness of automobile hub support,
The main function of the casting process numerical simulation software is to simulate and predict the formation of shrinkage porosity
1. Solutions to “gap” casting defects After many tests, we finally understand that we must systematically match the three process
Furan resin sand is used for molding, and the 24h strength of sand mold (core) is controlled σ b≥1.0 MPa;
The causes of casting defects are all from the poor casting process design and structural design of the mold; The
Under the action of alternating load, even if the stress amplitude is far less than the yield strength of the
Hub support is an important supporting component of automobile suspension system. During automobile driving, it mainly bears alternating impact load,
With the increasing maturity of computer technology, casting simulation software tends to be improved. Casting numerical simulation technology has become
Casting simulation technology first rose abroad in the 1960s. Denmark, the United States, Germany, Japan and other countries have successively
As we all know, the casting process is an extremely complex high-temperature, dynamic and changing process, and the casting defects
1. Cold cracking casting defect Cold cracking casting defect refers to the crack caused by the casting stress greater than
After sampling the casting defect location, the scanning electron microscope was used for analysis. After ultrasonic cleaning, the casting defect
(1) The defects of the anchor support and the outlet flange are close to the processing surface, and the processing
The cylinder head of a certain type of diesel engine produced by ZHY Casting factory has complex structure, compact layout,
As a common casting surface defect, sand inclusion casting defect often occurs in wet casting thick plate castings. Typical sand
Porosity casting defect refers to the defect caused by the bubbles left in the casting before the liquid metal solidifies
With the continuous development and progress of casting technology, the casting structure under the new technical conditions has many advantages
Due to the liquid shrinkage and solid shrinkage of liquid metal during solidification, the holes formed at the last solidification
This link should focus on the inspection of personnel skills and experience. The operator’s work certificate can be checked. At
The dual-phase steel pump casing has the common characteristics of cast steel: high melting point, poor fluidity, large shrinkage, easy
The pump casing is the main part of the water pump, which is mostly made of dual-phase steel. Different grades
1. Design of turbine casing pouring system The internal and external contours of turbine shell parts are relatively complex. When
Since the end of the 20th century, with the progress of science and technology and the development of national economy,
These two processes are basically similar, which are the basis of the whole casting process and directly affect the box
The single suction pump casing is a box type casting, and its structure is shown in the figure. Casting defects