Practical application of high chromium cast iron ztap / HCCI composite grinding roller
The ztap / HCCI composite grinding roller was successfully prepared by splicing several preforms and fixing them at the corresponding […]
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cast iron
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Three body wear properties of high chromium cast iron ztap / HCCI composite
Take photos of the worn sample surface, import the pictures into image Pro Plus software, and identify and select the
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Phase and element distribution of high chromium cast iron ztap / HCCI composite
Figure 1 shows the XRD pattern of ztap / HCCI composite. The phases of the composites mainly include Al2O3 in
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Microstructure and morphology of high chromium cast iron ztap / HCCI composite
Figure (a) shows the overall metallographic structure (after heat treatment) of ztap / HCCI composite under optical microscope. The microstructure
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Macro morphology of high chromium cast iron ztap / HCCI composite
The macro morphology of the preform is shown in figure (a). After sintering, ztap is fully wrapped by HCCI to
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Nodular cast iron plunger pump block
In the hydraulic system, the most important function similar to the “heart” is the high-pressure plunger pump, which is also
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Analysis of the influence of the composition of nodular cast iron on shrinkage and porosity tendency
According to the test results of shrinkage and porosity defects, the shrinkage and porosity defects are mainly concentrated on the
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Effect of composition of nodular cast iron on shrinkage and porosity
After shot peening and grinding, ut test was carried out on the surface of the test block after sanding, and
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The development prospect of domestic nodular cast iron gas turbine
Since 2002, with the adjustment of national energy policy and the increase of West to east gas transmission project and
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Research status of nodular cast iron gas turbine in China
Heavy duty gas turbine (HGT) is a large-scale energy and power equipment which integrates many high technologies such as unit
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Market prospect of nodular cast iron gas turbine
In terms of gas turbine market prospect analysis, relying on the background of our company as the power main engine
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Technical requirements of nodular cast iron in Cylinder Casting
Nodular cast iron intake cylinder is one of the important parts in the front end of heavy duty gas turbine
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Test and result of cast iron sample for engine block
The results show that the size of the cylinder block is qualified and there is no obvious defect on the
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Metallographic structure defect of heavy section position of nodular cast iron into cylinder
The floating of graphite and abnormal shape of graphite in the center is a kind of metallographic structure defect associated
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Research status of lost foam casting technology for cast iron alloy
Although lost foam casting technology has been widely used in the production of cast iron alloy, the solidification of cast
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The main problems of cast iron alloy parts alloy made by lost foam casting
In the practical application of lost foam casting at home and abroad, ferroalloy is the most widely used metal material
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Prevention method of porosity in cast iron
Cast iron castings often have various casting defects. How to prevent these defects has always been the concern of casting
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How to solve the main problems of cast iron alloy made by lost foam casting
In view of the problems such as coarse structure and low mechanical properties in EPC iron castings, the following measures
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Prevention of sand hole and casting slag defects in cast iron
Features: small holes filled with mold (core) sand inside or on the surface of defects are called sand holes. If
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Prevention of graphite floatation defects in iron castings
Features: a layer of clear and dense black spots can be seen on the upper surface of the fracture surface
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The prevention method of spheroidization decline defect of cast iron
Features: in the castings poured by the same ladle, the early casting has good spheroidization, and the later casting has
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The prevention method of the non-uniform hardness of the cast iron
Features: after the surface of the casting is processed, there are micro concave and convex, and some parts have “shiny”
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Prevention method of casting deformation defects of cast iron
Features: long castings are prone to deformation, such as machine bed, cylinder block and cylinder head of diesel engine. Due
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Prevention methods of casting crack defects of cast iron
Features: the surface of the casting has straight or curved cracks. There are two kinds of cracks: hot crack and
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Prevention of sand sticking defects in cast iron
Features: the surface of the casting is bonded with a layer of molding material that is difficult to clean. There
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Prevention methods of shrinkage cavity and porosity in cast iron
Features: in the thick section of the casting, hot spot or axis and other places of the final solidification, rough
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Prevention and treatment of the subcutaneous porosity in ductile iron casting
The following measures can be taken: (1) When wet casting is adopted, the moisture content in the sand must be
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The phenomenon and cause of air hole under the skin of ball milled cast iron
Phenomenon One of the most common defects in the production of nodular cast iron is subcutaneous porosity. Subcutaneous porosity is
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Metallurgical quality and technological measures to prevent subcutaneous porosity of nodular cast iron
① Desulfurization treatment. The so-called desulfurization is to transfer the sulfur in the molten iron to the slag as much
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Analysis on the problems of inoculation treatment of cast iron
Before pouring, a certain amount of substance (inoculant) is added to the molten iron under certain conditions (such as certain