The effect of tempering temperature on the impact properties of 30cr13nb0.1 steel is shown in Fig. 1. It can be […]
It can be seen from the figure that with the increase of tempering temperature, the hardness of 30cr13nb0.1 steel first
The room temperature tensile strength and elongation of A1 and A2 alloys under different processes are shown in Fig. 1.
Fig. 1 shows the microstructure of 30cr13nb0.1 steel tempered at different temperatures. It is preliminarily judged that it is martensite
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
The ztap / HCCI composite grinding roller was successfully prepared by splicing several preforms and fixing them at the corresponding
Take photos of the worn sample surface, import the pictures into image Pro Plus software, and identify and select the
Figure 1 shows the XRD pattern of ztap / HCCI composite. The phases of the composites mainly include Al2O3 in
Figure (a) shows the overall metallographic structure (after heat treatment) of ztap / HCCI composite under optical microscope. The microstructure
The macro morphology of the preform is shown in figure (a). After sintering, ztap is fully wrapped by HCCI to
1.Selection and properties of preform materials The mass fraction of ZrO2 in ztap is 40wt%, the particle size is 1
The slag holes are mainly distributed around 2 and 5 turns, accounting for 22.7%; the defect area is large and
The generation of cold shut is directly affected by the temperature of molten iron. At a certain temperature, the design
The air-conditioner of the defective product is mainly located at the highest point of the mold, i.e. 2 and 5
Air conditioner The cold air gap is the gap that penetrates or does not penetrate the casting, and the edge
The microhardness of lzqt600-3 ductile iron profile was tested under the optimal scheme of nitrocarburizing state in three parts. The
As cast and qsa313 The curve of the two samples first rises and then decreases, and fluctuates greatly. This is
The significance of the comprehensive score data of friction and wear at the edge, 1 / 2R and center was
The friction and wear properties of lzqt600-3 ductile iron profile at different positions were tested. Among them, the comprehensive score
The effective hardening depth of three parts of lzqt600-3 ductile iron profile was measured. According to the measured data, the
The microhardness of different sections of the nitrocarburized lzqt600-3 ductile iron profile was tested. The effective hardened layer depth of
The evaluation index of the data is the visual analysis chart of the influence of various factors on the surface
Based on the ternary phase diagram of Fe-C-N system, the surface chemical heat treatment of nitrocarburizing is carried out. The
The evaluation index of the data is the visual analysis chart of the influence of various factors on the thickness
The thickness of nitrided layer in three parts of lzqt600-3 ductile iron profile was measured. It can be seen from
The picture shows the XRD spectrum of the surface of the sample at the edge after being treated at 540
The picture shows the SEM morphology of the cross section of the nitrocarburized sample at the edge of lzqt600-3 ductile
The as cast microstructure and properties of lzqt600-3 ductile iron profile were studied. Firstly, according to GB / T 9441-2009
The figure shows the potentiodynamic polarization curves of three parts of lzqt600-3 ductile iron profile in 3.5% NaCl solution. The
