Modeling of compressor casting diaphragm with casting defects
In order to analyze the stress and deformation of casting diaphragms before and after repair welding, a three-dimensional solid model […]
In order to analyze the stress and deformation of casting diaphragms before and after repair welding, a three-dimensional solid model […]
In the actual production process, it is found that the processed casting sand mold has the following two main defects:
It can be seen from the table that under the pouring temperature of 1420 ℃ and 1450 ℃, the mold
The design of inner gate has a very important impact on the casting quality, because the flow direction and speed
1. Mold filling simulation process and analysis Figure 1 shows the filling state of the new process numerical simulation at
In the casting process of nodular cast iron piston ring, it can be divided into two types: single piece casting,
1. Main structural characteristics of vertical column The vertical lathe column casting is a super large, super heavy and high-strength
C Si Mn P S Cr Mo 0.32-0.42 0.20-0.45 0.50-0.80 ≤0.025 ≤0.025 0.80-1.20 0.20-0.30 The planet carrier is made of
In view of the casting defects of the compressor diaphragm in the casting process, the mechanical properties of the casting
Cast diaphragms are the main stator components in centrifugal compressors. According to the different arrangement positions and functions of cast
The casting defect samples were analyzed by energy spectrum, and the scanning positions of energy spectrum points were shown in
The defect samples are analyzed by energy spectrum, and the scanning positions of energy spectrum points are shown in Figure
Energy spectrum analysis of casting defect samples; For example, the table shows the element composition of each scanning point in
At a higher magnification of the scanning electron microscope, the casting defects of the three samples are as shown in
For defects visible to the naked eye on the casting surface and the parts with defects found during flaw detection,
A company used the wet casting method to produce a certain type of automobile shell castings, which are made of
Through the understanding of the existing casting process of turbocharger, combined with the current situation of the casting process and
Casting defect Cause Improvement measures Unqualified chemical composition The composition of master alloy ingot is unqualified, and the burden of
Casting defect Cause Improvement measures White skirt The temperature of molten aluminum is low, and the heat conduction differential ripening
1. Nodular cast iron molding process The two box core molding is adopted to enlarge the sand filling core of
Nodular cast iron intercooler base pipe is an innovative design for the company’s large internal combustion engine. The material is
1. Location and shape of crack defects in cylinder block castings During the trial production process, cracks were found between
ZHY casting assisted in the development of a new 16 l natural gas engine. The cylinder block is one of
At present, the requirements for energy conservation and emission reduction of passenger vehicles at home and abroad are becoming higher
The counterweight can adjust the service quality of the tractor and the mass distribution of the front and rear wheels,
1. Causes Cracking of the supporting wheel The crack shape of the casting defect is fine and straight. The crack
1. Causes In the semi finishing stage after quenching and tempering, it was found that the nozzle end face had
1. Causes Through the collection and analysis of more than 100 casting idlers, a total of 12 casting idlers have
1. Casting process plan The supporting roller is generally made of ZG42Cr1Mo, ZG35Cr1Mo or similar materials. The hardness of the
According to the structural characteristics of the product and referring to the results of similar products after production, two process