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  • Characteristics of forgings compared with castings

    2019-06-05 08:14:28
    Compared with castings, metals can improve their microstructure and mechanical properties after forging. After the hot-working deformation of the cast structure by the forging method, the original coarse dendrites and columnar grains become the equiaxed recrystallized structure with fine grains and uniform size due to the deformation and recrystallization of the metal, so that the original segregation in the steel ingot, The compaction and welding of loose, stomata and slag inclusions make the structure more compact and improve the plasticity and mechanical properties of the metal.
  • Advantages and disadvantages of ductile iron

    2019-06-04 18:59:36
    Compared with cast iron, ductile iron has an absolute advantage in terms of strength. The tensile strength of ductile iron is 60k, while the tensile strength of cast iron is only 31k. The yield strength of ductile iron is 40k, while cast iron does not show yield strength and eventually breaks. The strength-cost ratio of ductile iron is much better than that of cast iron.
  • Some design elements of precision castings

    2019-06-04 18:56:52
    In addition to the requirements of the machine equipment itself and the requirements of machining process, the design of precision castings should also meet the requirements of the casting process. The structural design of the castings should pay attention to the following points: First, it is convenient to manufacture models, core boxes and shapes:
  • Precision casting technical requirements

    2019-06-04 18:53:41
    For small castings, it is possible to use a horizontal or vertical type of boxless high-pressure molding machine production line, and the production efficiency of the real model is high.
  • What is lost wax casting?

    2019-06-04 18:46:19
    Investment casting is also called lost wax casting, including waxing, waxing, grouping, dipping, melting wax, casting molten metal and post-treatment.
  • What is a steel casting?

    2019-06-04 18:41:08
    In metal smelting, ingot casting is divided into upper casting and lower casting. The molten steel ingot is usually a lower casting method. The molten steel is discharged from the underside of the ladle and enters the medium casting tube, and enters the ingot mold from below.
  • Process characteristics of steel castings

    2019-06-04 18:38:41
    The steel castings are metal objects obtained by casting. The steel castings are pieces of art created by the workers' masters. So, what are the characteristics of these artworks?
  • Stainless steel castings maintenance method

    2019-06-04 18:32:42
    Although the material is made of stainless steel, it is mainly used in the external environment and is inevitably eroded to cause oxidation and rust. Therefore, in daily life, care should be taken to maintain the life of stainless steel products.
  • Precision casting industry conditions and process characteristics

    2019-06-04 18:27:40
    Process level, casting quality and product category From the perspective of use and quality, the current castings produced by precision casting are mainly: castings for aviation and gas turbines produced by the first type of process, and the quality has reached international level.
  • In recent years, in order to solve the problem that the water glass can be used for a short period of time,

    2019-06-04 18:20:49
    the low-modulus water glass is often used to extend the usable time of the water-glass sand. Each factory has developed its own factory standard according to specific conditions and measures.
  • In recent years, in order to solve the problem that the water glass can be used for a short period of time,

    2019-06-04 18:20:49
    the low-modulus water glass is often used to extend the usable time of the water-glass sand. Each factory has developed its own factory standard according to specific conditions and measures.
  • Composition of water glass

    2019-06-04 18:14:22
    Water glass is a general term for aqueous solutions of various silicates (sodium silicate, potassium silicate, lithium silicate, etc.). Chemical expression:M2O.mSiO2.nH2O
  • asting is the injection of a liquid alloy into a mold to cool and solidify it to obtain the desired shape.

    2019-06-04 10:50:13
    So for casting, there are two basic elements: 1. Qualified cavity - has a certain strength, can withstand the high temperature of liquid alloy; and can ensure that the liquid alloy can fill the cavity.
  • Surface cleaning of stainless steel precision casting products

    2019-05-05 14:08:55
    Surface cleaning of stainless steel precision casting products Generally, there are a variety of methods including dry method and wet method. The dry method is cleaned by shot blasting machine. The wet method is more than electro-hydraulic sand cleaning, hydraulic clearing, and water clearing.
  • Precision casting technology requirements

    2019-05-05 14:08:43
  • Metal casting advantage

    2019-05-05 14:08:28
    Metal casting advantage
Altogether 56 article, Every page shows:20 article

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