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aluminum-die-casting-porosity

How to prevent porosity in casting using squeeze casting process

Porosity is a common defect in die castings. Gas porosity and shrinkage porosity are mainly two types of porosity in casting. Squeeze casting is a powerful manufacturing technique that effectively prevent porosity in castings. The combination of pressure and heat during solidification leads to denser and more reliable components. The specially designed feeding method along with an venting system can effectively purge air from the feeding process. This technique is particularly effective in reducing or eliminating porosity in castings, beneficial for applications requiring high strength and structurally sound metal casting parts. What Causes Porosity In Casting   There are many reasons for the formation of die casting porosity. Here we discuss two main causes of casting porosities. The metal injection speed in the casting process is very fast, this process is easy to roll air and other gases, resulting in a large amount of air brought into the mold.  As the metal solidifies, these trapped gases create voids or porosities in the casting. In the

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squeeze casting valves parts 1 1

Squeeze Casting VS High Pressure Die Casting-2 Advantages of Squeeze Casting Process Over High Pressure Die Casting

Squeeze casting has many advantages over high pressure die casting(HPDC). Here we are discussing indirect aluminum squeeze casting, a process much closer to aluminum high pressure die casting. Alum squeeze casting can effectively avoid die casting defects and get high property casting products.   squeeze casting advantages 1—higher mechanical strength   Alum squeeze casting products have a higher mechanical strength than high pressure die casting. This advantage can be used to produce mechanical components that require high strength. For example, trailer hitch, support parts, connection parts, etc.These high-strength components are conventionally obtained using cast steel, cast iron or forging. The use of the aluminum squeeze casting process provides light weighting and reduced costs by more than 30% compared to forging.     The following table shows the mechanical strength parameters of the squeeze cast  by A356 after T6 heat treatment. Yield strength / MPa 220-240 Tensile strength / MPa 260-300 Hardness / Hb 80-100 Density / g/cm³ 2.70-2.72 squeeze casting 

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aluminum squeeze casting parts 7

What are the Defects of the Aluminum Die Casting Process?

The aluminum die casting process is the most popular way to make castings because it works well to produce a large number of castings. Unfortunately, parameters and non-standard operations can cause many kinds of defects.Here, we will discuss the different aluminum die casting defects causes and solutions.Internal and superficial are the two categories of aluminum die casting defects.

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High Pressure Die Cast Custom Service Provided-Casting Handle

Common surface treatment methods of aluminum alloy die castings

For aluminum alloys die casting parts, there’re lots of surface treatment methods, below is some common methods:   1. Powder spraying (ie powder coating)   Powder spraying is to spray powder coating on the surface of the workpiece with powder spraying equipment. Under the action of static electricity, the powder will be uniformly adsorbed on the surface of the workpiece to form a powder coating.   2. Baking paint treatment   The real baking paint process is spraying with aluminum alloy after phosphating, and then baking after spraying. This kind of coating is not only anti-corrosion but also bright and wear-resistant, and it is not easy to fall off.   3. Oil injection treatment   Oil injection is the name of the surface coating processing of industrial products. Oil injection processing is generally specialized in plastic oil injection, silk screen printing, pad printing processing; EVA, rubber and other shoe materials change color and screen printing. It has spraying line, silk

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die casting aluminum alloys

Common used die-casting aluminum alloys

Common used die-casting aluminum alloys are mainly divided into three categories: Al-Si Alloy: YL102/ A413/305/ADC1/ALSI12 Al-Si-Cu Alloy: YL112/A380/306/ADC10/ALSI8CU3,   YL113/A383/383/ADC12 Al-Si-Mg Alloy: YL101/A360/309/ADC3/ALSI10MG For aluminum-silicon alloys and aluminum-silicon-copper alloys, under normal circumstances, the silicon content is between 6% and 12%, which mainly improves the fluidity of the alloy; the copper content is second, which mainly enhances strength and tensile strength; the iron content is usually between 0.7%-1.2%, within this ratio, the demoulding effect of the castings is the best. It can be seen from its structural composition that such alloys cannot be oxidized and colored, and even if desiliconization is used, it is difficult to achieve the desired effect. However, for aluminum-magnesium alloys, the effect of anodizing is slightly better.

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厂区 2

Casting Classification

There are many process methods for making metal materials into desired products, such as casting, forging, extrusion, rolling, drawing, stamping, cutting, powder metallurgy and so on. Among them, casting is the most basic, most commonly used and the most extensive process. The molten metal is poured into a hollow mold made of high-temperature resistant materials, and after condensation, a product of the desired shape is obtained, which is casting. The resulting product is a casting. Casting can be divided into ferrous metal casting (including cast iron, cast steel) and non-ferrous metal casting (including aluminum alloy, copper alloy, zinc alloy, magnesium alloy, etc.) according to the material of the casting. CEX factory specializes in non-ferrous metal casting, with an emphasis on aluminum alloy and zinc alloy casting. Casting can be divided into sand casting and metal casting according to the material of the casting mold. CEX factory is handy with both casting processes, and designs and manufactures these two types of

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Thermoforming6

Learn more about plstic thermoforming

Blister products are processed with plastic. The production principle of the product is to heat and soften the flat plastic hard sheet material, then adsorb it on the surface of the mold with vacuum, and then cool it to form. Blister products are widely used. It is mainly used in electronics and electrical appliances. Industry, food industry, hardware tools, cosmetics industry, toy industry, daily necessities industry, medicine, health care products, automobiles, stationery and other categories of industries. The general process of plastic thermoforming: Plastic Sheet – Cutting – Sheet Fixing – Heating – Forming – Demoulding – Cutting Edge – Finished Product Material requirements for plastic forming: 1. Blister molding can only produce products with relatively uniform wall thickness (generally, the chamfer is slightly thinner), and cannot produce plastic products with widely different wall thicknesses 2. The wall thickness of blister molding is generally in the range of 1 to 2mm or thinner (the most commonly used thickness of blister

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Complex Die Casting OEM Parts- Support Bracket

The role of the main elements of die-casting aluminum alloy

  Si Element The Si content of cast aluminum is mainly concentrated in 5%-11%, and the elongation of hypereutectic aluminum alloys exceeding 11% is greatly reduced, which is not suitable for die-casting aluminum. As far as elongation is concerned, the Si% content decreases greatly from the range of 0-3%; then it tends to ease until 11% decreases again (hypereutectic alloying). In terms of fluidity, the higher the Si content, the lower the melting point and the better the fluidity. Cu Element The Cu content has an upper limit of 5%, because the maximum content of α-Al solid solution Cu is 5.65%; in the range of 1%-4%, the strength increases with the increase of the content. The Cu element can crack the Al2Cu particles to strengthen the material properties, but for the non-heat-treatable die castings, the main feature is that it improves the cutting performance (increases the ductility). After all, castings generally require machining. The disadvantage of Cu is that it

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