Determination of other process parameters of high temperature and high pressure valve casting
The production of ZHY casting steel castings adopts the chilled furan resin quartz sand process, and the chilled furan resin […]
News
Scientific
Design and parameter setting of gating system in investment casting
The pyramid lattice sandwich structure with core member length L = 32mm, core and panel angle w = 60 °
Scientific
Optimization of investment casting process parameters to avoid casting defects
Pouring temperature, shell preheating temperature, investment casting pouring speed and other process parameters are very important to the molding quality
Scientific
Development of ductile iron valve castings
ZHY casting produced a batch of 500mm ductile iron valve castings for an enterprise in Japan. The valve is composed
Scientific
Casting technology of nodular cast iron valve
The quality requirements for nodular cast iron valve castings are very strict, the body spheroidization rate is above grade 3,
Scientific
Production of valve castings from as Cast Ferritic Ductile Iron
In recent years, with the continuous expansion of the market, the number of valve ductile iron parts in our factory
Scientific
Pattern, gating and riser combination and size control of lost foam casting for stainless steel valves
The gating system of stainless steel valve is designed with a variety of pouring methods, such as bottom injection, top
Scientific
Die casting technology of automobile engine cylinder block
Die casting technology uses the piston to fill the mold cavity with molten liquid metal at high pressure and high
Scientific
Process control of valve casting in Lost Foam Casting
1. Vibration modeling The sand used for lost foam casting of valve castings is dry sand without binder, which has
News
Quality control of coating for valve castings
1. Coating performance requirements The selection of different formulations, components and the proportion of various components have a great impact
News
Computer simulation technology in the production of China large steel castings
Large steel castings have large size and long production cycle. They are generally produced in small batch or even single
News
Heat treatment technology in the production of China large steel castings
After pouring of large steel castings, there are great differences in the cooling rates of different parts, appearance and core
Scientific
Quality control of foam in Lost Foam Casting for stainless steel valves
1.Selection and pretreatment of foam raw materials EPMMA and STMMA foam are often used in stainless steel valve castings. The
News
Characteristics of lost foam casting valve body
After nearly half a century of development, lost foam casting technology has gradually entered a mature stage. Its products have
News
Study on Numerical Simulation of Lost Foam Casting
In recent years, with the development of casting numerical simulation technology, there are many research results in traditional pressure casting
Scientific
Design of decompression gating system for inner sprue in sand casting
As mentioned above, the open gating system is not conducive to slag retaining at the initial stage of pouring, and
Scientific
Effect of shell preheating temperature on shrinkage cavity and porosity of castings
Parameter setting: when the pouring temperature is 1550 ℃ and the pouring speed is 30mm / s, the shell preheating
News
Determination of gate position of process gating system for box sand castings
According to the analysis of the simulation results of the original process scheme, the bottom pouring system of the original
Scientific
Statistical analysis of scrap of valve castings after improvement
After the above improvement measures are taken, the waste of valve castings and the statistics of defect types are shown
News
Improvement measures for main casting defects of waste valve castings
According to the causes of valve casting defects, we have taken improvement measures mainly from the following aspects: (1) Properly
Scientific
Cause analysis of main defects of valve casting scrap
(1) The guarantee ability of melting equipment to molten iron composition is poor and the stability of sand mixing equipment
Scientific
Statistics of valve casting scrap before process improvement
Valve castings are one of the leading products in castings, and the annual market demand is very large. However, due
Scientific
Prediction criterion of shrinkage cavity and porosity casting defects in investment casting
There are many reasons for casting defects. Gating system, pouring temperature and flow speed of molten liquid, casting size and
Scientific
Research and development of key process of c12a valve casting and determination of process parameters
Through repeated trial production and continuous research and development in recent years, ZHY casting has accumulated mature production experience, applied
News
Development of valve casting industry in China
In recent years, the domestic pump and valve casting industry has developed rapidly, but there are still many problems in
Scientific
Production of ZGCr5Mo high temperature and high pressure valve castings
ZHY casting produces 20 sets of 65j61y64i valves for a power plant. The medium of the valves is high-pressure steam
News
Study on key process of c12a valve casting
The crack defects can be greatly reduced and eliminated by improving the main key process methods in the manufacture of
Scientific
Key technical specifications for c12a valve castings
ASME sa-217 c12a material is a high alloy heat-resistant steel. It is a new material developed by the United States.
News
Casting technology in the production of China large steel castings
Large castings have long production cycle and complex processes. Generally, they have to go through many processes. Reasonable setting of
News
Application status of computer simulation in Lost Foam Casting
Lost foam casting numerical simulation technology has become a powerful simulation and simulation technology, and goes deep into all aspects