Variation of microstructure of as cast ductile iron with casting modulus (wall thickness)
For austempered ductile iron, the carbon content in high temperature austenite and retained austenite has a significant effect on the […]
For austempered ductile iron, the carbon content in high temperature austenite and retained austenite has a significant effect on the […]
OM Observation The metallographic sample is made by standard metallographic technology. The concrete methods are: grinding the observation surface on
Tensile test Ht-2402-100kn universal testing machine is used to measure the tensile properties of ADI in strict accordance with GB
Temperature test of molten iron Ya1-w330 portable melting thermometer is used to measure the molten iron temperature in the process
In order to test the carbon content in austenite during austenitizing, gsl-1500x 1500 ℃ high temperature vacuum tube furnace was
The basic operation methods of numerical simulation include finite element method, finite difference method, boundary element method and direct difference
After the ductile iron test bar is taken out of the box, the angle grinder is used to cut the
Ordinary clay sand molding is adopted, and the molding process includes mold processing, sand mixing, sand pounding, box turning, vent
The spheroidizing treatment was carried out by the method of in package charging. The spheroidizing temperature is 1450 ~ 1500
(1) EPMA analysis of carbon content in austenite of ductile iron ① The effects of austenitizing temperature and austenitizing holding
By strictly controlling the chemical composition, melting process, spheroidizing inoculation process and casting modulus of nodular iron, high-quality nodular iron
Heat treatment is usually used in strengthening and toughening treatment of ductile iron. The heating temperature of most heat treatment
In terms of molten iron melting and spheroidizing treatment, Shen Yonghua has produced high-quality Austempered Ductile Iron blanks by using
It is the first time in our country to austemper the rare earth magnesium nodular iron at lower temperature and
Krzy ń ska a analysis by transmission electron microscopy (TEM) shows that the ferrite in acicular ferrite in ADI is
The research of Austempered Ductile Iron in the world began in the 60s of last century At the end of
In order to obtain ADI material with stable structure and performance, the salt bath used for isothermal transformation should have
The steel contains no other alloying elements except carbon and silicon and manganese alloy elements for deoxidation. This kind of
As a key factor affecting the microstructure and properties of austempered ductile iron, the range of isothermal quenching temperature (TA)
The increase of austenitizing temperature (t γ) and the prolongation of austenitizing holding time (t γ) can increase the solid
The small fluctuation range of chemical composition, especially the content of C, Si, Mn, P, s, re and Mg, is
The quality of ductile iron blank is the key to prepare high performance ADI material. The more graphite spheres are
Austempered Ductile Iron material standard American, European, Japanese and Chinese Austempered Ductile Iron grades and performance standards. The publication and
Isothermal transformation of ductile iron The specific process of Austempering is as follows: the nodular iron castings are heated to
In the 1930s, the isothermal quenching heat treatment technology was put forward in the United States through the isothermal transformation
5.Buried box with empty shell 5.1 preparation before embedding The inner wall of the roasted hollow shell cavity is smooth,
4.Baking of coating shell The baking of coating shell is the key link of the process. In the process of
Casting Name: 105 type cable head; material: ZG310-570; geometric dimension: 620 mm × 290 mm × 210 mm; single piece
The shell casting process of lost foam casting has cleaned the foam thoroughly and thoroughly through the roasting process before
The reason is that a lot of alloy elements are added into the casting during the process of proportioning, among