Performance and microstructure requirements of ductile iron nuclear spent fuel container
The service conditions of ductile iron nuclear spent fuel container are harsh, the performance requirements are strict, especially the low […]
The service conditions of ductile iron nuclear spent fuel container are harsh, the performance requirements are strict, especially the low […]
In order to solve various defects and problems of large section ductile iron castings, scholars at home and abroad have
First of all, in order to further compare the influence of the newly designed stamping and welding exhaust manifold and
The results show that tempering temperature has obvious effect on the quantity and morphology of carbides in 30cr13nb0.1 steel, which
In the overall optimization scheme, in order to improve the exhaust efficiency of the exhaust manifold, ensure that the exhaust
The effect of tempering temperature on the impact properties of 30cr13nb0.1 steel is shown in Fig. 1. It can be
In the design process, comprehensive consideration is needed. First of all, on the basis of the original exhaust manifold, the
It can be seen from the figure that with the increase of tempering temperature, the hardness of 30cr13nb0.1 steel first
For example, the original exhaust manifold of automobile engine is cast exhaust manifold, and its structure is shown in Fig.
The room temperature tensile strength and elongation of A1 and A2 alloys under different processes are shown in Fig. 1.
At present, the application scope of gasoline engine in our country is expanding, and because of the large reactive power
Fig. 1 shows the microstructure of 30cr13nb0.1 steel tempered at different temperatures. It is preliminarily judged that it is martensite
Establishment of 3D model and mesh generation The 3D model of die casting is carried out by Pro / E
Fig. 1 and Fig. 2 are SEM photos of microstructure of as cast samples of A1 and A2 alloys by
Fig. 1 and Fig. 2 show the SEM photos of as cast samples of A1 and A2 alloys without ultrasonic
In order to obtain the unique solution of hydrodynamics, not only the above basic equations, but also the boundary conditions
The ztap / HCCI composite grinding roller was successfully prepared by splicing several preforms and fixing them at the corresponding
Die casting, referred to as die casting, is a kind of precision casting method in which liquid or semi liquid
Take photos of the worn sample surface, import the pictures into image Pro Plus software, and identify and select the
Lightweight design of aerospace components is an important research direction in this field. Reducing the mass of aerospace components can
Figure 1 shows the XRD pattern of ztap / HCCI composite. The phases of the composites mainly include Al2O3 in
Test material and heat treatment process The ingot containing 0.117% Nb (mass fraction) was melted in 15 kg medium frequency
Figure (a) shows the overall metallographic structure (after heat treatment) of ztap / HCCI composite under optical microscope. The microstructure
30cr13 martensitic stainless steel has good mechanical properties, hardenability and corrosion resistance, which is widely used in medical devices, measuring
The macro morphology of the preform is shown in figure (a). After sintering, ztap is fully wrapped by HCCI to
The nominal composition of the experimental alloy is shown in Table 1. The raw materials are: al-24.45% Si master alloy,
1.Selection and properties of preform materials The mass fraction of ZrO2 in ztap is 40wt%, the particle size is 1
(1) The results show that the Fe rich phase in al-17si-1fe alloy contains only long needle like β phase when
The slag holes are mainly distributed around 2 and 5 turns, accounting for 22.7%; the defect area is large and
Hypereutectic Al Si alloys have been widely used in the manufacture of automotive engine piston, cylinder block and other parts