Blog

What materials are used for casting molds? Casting molds use the following materials: casting molds for the number of uses due to the casting production varies, mainly divided into metal molds and non-metallic molds non-metallic mold materials are: wood, plastic, etc.. Metal mold materials are: plastic, aluminum alloy, cast iron, steel and so on. Wooden molds At present, wooden molds are widely used in manual or small batch production, but with the increasingly stringent environmental requirements, the use of wood will be more and more limited, rather than true casting. True casting uses Styrofoam board as the material, cuts and bonds it into shape, and then pours it into a casting. Compared with wood molds, this method not only saves wood, but also makes castings with higher dimensional accuracy and better surface roughness. Plastic Molds The application of plastic molds is on the rise, especially with the introduction of processable plastics to the market...

What is sand casting? Sand casting , also known as sand casting, is a time-honored method of casting process with a wide range of applications across the globe. It is a process of producing castings by using clay-bonded sand (or sand molds made of other materials such as gypsum and silicone resin) as the molding material. The principle is to take advantage of the softness and ease of molding of the sand mold by pouring molten metal into the sand mold, and then crushing the sand mold after the metal has solidified in order to obtain the desired casting. Applied in a variety of metals, common aluminum sand casting, iron sand casting, copper sand casting, now let the aluminum alloy casting factory located in China Ningbo He Xin for everyone to explain the sand casting process. Conventional process flow of sand casting production Sand casting process (1) Preparation of molding sand and core sand The molding material for sand casting is mainly used for...

Gravity casting introduction: gravity casting refers to the aluminum liquid in the earth's gravity under the action of gravity injection casting process. Broad gravity casting gravity casting is divided into sand casting, metal type (steel mold) casting, disappearing mold casting. ; Narrow gravity casting refers to the metal type casting. Metal casting is divided into upright hand casting, tilted casting is now most commonly used metal mold (steel mold) casting. The mold is made of heat-resistant alloy steel, casting aluminum castings strength, size, appearance are higher than other casting processes. Aluminum liquid for gravity casting is generally poured manually into the gate, relying on the self-weight of the metal liquid to fill the cavity, exhaust, cool, and open the mold to obtain the sample. The process is generally: aluminum liquid melting, pouring, exhaust, cooling, mold opening, cleaning, heat treatment, processing. Aluminum alloy gravity casting is characterized by ...

Casting flange Casting flange, blank shape and size accuracy, small processing, low cost, but there are casting defects (porosity. Cracks. Inclusions); casting internal organization streamline is poor (if it is cutting parts, streamline is poor); forging flange is generally lower than casting flange, low carbon content, not easy to rust. Forging streamline good, dense organization, mechanical properties better than casting flange; if the forging process is not appropriate, the grain will be large or uneven, there will be hardening cracks, forging cost is higher than casting flange. Forgings can withstand higher shear and tensile forces than castings. The advantages of castings are complex shape, low cost; uniform internal organization, no casting holes, inclusions and other harmful defects; casting flanges and forging flanges, such as centrifugal flanges, belong to one of the casting flanges. &nb...

When heat treating aluminum and aluminum alloys, Ningbo Hersin recognizes the current problems faced and why tight control of process fluctuations and equipment deviations is critical. In order to provide assistance to colleagues in the field of heat treatment, Ningbo Hersin has summarized and categorized the most commonly encountered process problems and put forward a number of targeted suggestions for solving them. Next, these topics will be discussed in more depth. Heat treatment related problems For the heat treatment of aluminum, the most reported problems include: 1) Wrong placement of parts Wrong placement - in the solid solution when the temperature is relatively high product rigidity is poor, easy to squeeze under the action of gravity deformation. Correct placement (Figure 1) avoids these problems. Figure 1. Correct placement of parts 2) Excessive heating/temperature rise - This causes thermal deformation and should be prevented. Correctly...

Aluminum Aluminum is a very common element with the symbol Al and atomic number 13. The earth's crust is rich in reserves of the element Aluminum with 8.31 TP3T, the third most abundant metallic element in the earth's crust after oxygen and silicon. Aluminum Alloy Aluminum is one of the light metal materials to which a certain amount of other alloying elements are basically added. Aluminum alloy In addition to the general characteristics of aluminum, due to the different types and amounts of alloying elements, it also has certain alloying characteristics. Aluminum alloy density of 2.63 ~ 2.85g/cm3 high strength (σb 110 ~ 650MPa) with good casting properties and plastic processing properties, good electrical and thermal conductivity, good corrosion resistance and weldability, can be used as structural materials casting, stamping, forging and other processes are widely used in aerospace, aviation, transportation, construction, electromechanical,...

Low-pressure casting and gravity casting are aluminum alloy casting process, low-pressure casting is also known as anti-gravity casting, low-pressure casting. Low pressure casting is also known as anti-gravity casting, low pressure casting. The difference between it and gravity casting is mainly reflected in the following aspects. The difference between the casting principle of operation: the difference between the casting principle of operation: low pressure casting is also known as anti-gravity low pressure casting, so the name of the casting method is through the gas pressure against gravity casting molding, as shown in the figure on the right: through the sealed crucible injected into the gas (usually 0.06 ~ 0.15MPa)), the aluminum liquid in the role of pressure through the middle of the pipeline, the product for the molding of the casting, holding pressure for a certain period of time, the aluminum water cooled in the mold cavity, the aluminum water cooled in the mold cavity. Aluminum water in the mold cavity cooling molding, through the discharge of gas pressure, open the mold, remove the product. Gravity casting refers to the casting of aluminum water through the action of gravity → filling → solidification and contraction → casting, this...

Low pressure casting is a method of forming castings by filling them with liquid metal under pressure. It is called low-pressure die casting because it uses very low pressure. The process flow (see Figure 1) is: in the sealed crucible (or sealed drill), into the dry compressed air, liquid metal 2 in the gas pressure, along the ascending tube 4 rise, through the gate 5 smooth into the cavity 8, keep the crucible recreational hydraulic pressure until the casting is completely solidified, and then relieve the hydraulic pressure, so that the open tube is not solidified liquid metal flow crucible collapsed, and then open the casting through the cylinder 12. The process specification of low pressure casting includes charging, pressurizing, preheating temperature, injection temperature, casting coating, etc. (1) Charging and pressurizing Lifting pressure refers to the pressure required when the level of the metal liquid rises to the mouth of the stream. The rise of the metal liquid in the ascending tube should be as slow as possible, in favor of the cavity gas...

A, die-casting molding technology introduction pressure casting referred to as die-casting, is the use of die-casting machine pressure will alloy molten liquid at a certain speed filled with in accordance with certain parts structure and process requirements design and through the precision manufacturing of the mold cavity, and alloy molten liquid to keep under a certain pressure, under the action of the mold cavity, in the mold cooled and solidified and molded a kind of high efficiency, high efficiency of the precision casting technology. B, die-casting molding technology characteristics and scope of application 1, die-casting molding technology features high pressure, high speed is die-casting liquid or semi-liquid metal filling molding process of the two main features, but also die-casting molding technology and other casting method is the most fundamental difference. &...

I. The purpose of developing standards 1. Reduce downtime caused by molds, production stoppages, improve labor productivity, reduce manufacturing costs. 2. Promote mold manufacturers to improve the level of mold manufacturing and quality, reduce its after-sales...

Aluminum die casting is a highly efficient manufacturing process commonly used for mass production of precision aluminum alloy castings. Compared with traditional casting methods, aluminum die casting molds can achieve higher production efficiency and finer casting dimensions. Aluminum die casting mold design and composition directly affects the quality of castings, production cycle and mold life, therefore, the design of a high-performance aluminum die casting mold is critical. Aluminum die casting die refers to the tool used to manufacture aluminum alloy high pressure castings, usually consists of die kernel, die seat, die core, cooling device, sliding device, ejector device and other components. The following is a detailed analysis of aluminum die casting die: the main components of aluminum die casting die aluminum die casting die design key considerations aluminum die casting die classification aluminum die casting die and die casting machine can be divided into: Horizontal cold chamber die casting...

What is an oil pan? The oil pan is located in the lower part of the engine's crankcase, also known as the lower crankcase. Used to seal the crankcase, collect the engine friction generated by the lubricating oil back to prevent outside dust impurities into the lubricating oil. Classification of the oil pan: common have these kinds of oil pan Plastic oil pan Plastic oil pan refers to the oil pan material for engineering plastics, the use of injection mold processing technology manufacturing, this material is manufactured by the oil pan more lightweight and thin quality, design freedom is relatively high, relatively inexpensive, more convenient installation. Has a certain degree of toughness. However, the high temperature resistance and corrosion resistance of the plastic oil pan is relatively poor, the life is relatively short, suitable for low working temperature, low frequency of use, the weight requirements of the environment. Aluminum alloy oil pan Aluminum alloy oil pan due to the use of...

What is an electric iron? Iron is a tool for smoothing clothes and fabrics, it is one of the common household appliances in modern times, it utilizes an electric heating element to heat up the soleplate and smoothes out wrinkles on the fabric through high temperature and pressure, the iron is used to remove wrinkles on clothes products. How does an iron work? The heating material inside the iron, such as nickel-chromium alloy wire, generates heat when current is passed through the electric heating element. This heat is transferred to the soleplate, raising the temperature of the soleplate. The soleplate is usually made of metal, such as aluminum alloy iron, copper alloy iron, etc., because metal has good thermal conductivity, can quickly and evenly transfer heat. When the temperature of the soleplate rises to a certain level, the clothes are placed on the soleplate, and the heat of the soleplate is transferred to the clothes, making the fibers of the clothes soft from...

1, Overview Since 1971, the Massachusetts Institute of Technology's D.B. Spencer and M.C. Flemings invented a stir casting (stir cast) a new process, that is, the use of rotating double barrel mechanical stirring method to prepare a Sr15% Pb rheological slurry since the semi-solid metal (SSM) casting process technology has experienced more than 20 years of research and development. The alloys prepared by stir casting are generally known as non-dendritic organization alloys or called Partially Solidified Casting Alloys (Partially Solidified Casting Alloys). Products using this technology have a strong vitality due to their high quality, high performance and high alloying characteristics. In addition to applications in military equipment, it has begun to focus mainly on key components for automobiles, for example, for automobile wheels, which can improve performance, reduce weight, and lower scrap rates. This ...

Porosity phenomenon (including bubbles, choke holes, air pockets) Causes: 1, mold preheating temperature is too low, liquid metal through the pouring system cools too quickly. 2、Bad mold exhaust design, poor gas discharge. 3, bad paint, poor exhaust, or even volatile or decomposition gas. 4, There are holes and pits on the surface of the mold cavity. After the liquid metal is injected, the gas expands rapidly and compresses the liquid metal, forming choking holes. 5、The surface of the mold cavity is rusted and not cleaned up. 6、Improper storage of raw materials (sand core), not preheated before use. 7、Bad deoxidizer, or insufficient dosage or improper operation. The following are short methods to prevent gas holes (bubbles, choke holes, air pockets): 1, within the appropriate range to control the pouring temperature, to avoid gas expansion is too high. 2、Mold preheating sufficiently, using good permeability, appropriate particle size...

These days a customer asked me how to choose the right die casting tonnage is not die casting tonnage the bigger the better, so write this article slightly explain the die casting mold tonnage selection. Picture high pressure casting is a kind of pressure casting, in the case of high speed and high pressure liquid through the pressure chamber, by the die casting machine hammer into the mold internal molding, die casting machine tonnage the larger the pressure is mainly reflected in the clamping force, and die casting hammer. So how to judge the die casting products need the size of the tonnage? How to calculate the high pressure die casting tonnage, here we mainly from four aspects to consider: 1, calibration die casting products clamping force What is clamping force? Clamping force refers to, high pressure die casting products in the casting process, the molten metal liquid with high pressure into the mold cavity will produce a hold up the force, this time high pressure die casting machine exerted to the mold of...

Hot working includes casting, forging and welding. Cold working, also known as metal cutting process, including tool cutting process (which has turning process, drilling and boring process, planing, inserting, broaching, milling process, abrasive cutting process; the processing of gear teeth). The following are briefly introduced. (A) casting The casting process is to pour liquid metal into the mold, to be cooled to obtain a certain shape and sex of the casting. This is the method of molding metal in the liquid state. Casting can produce billet blanks of complex shapes, especially complex internal cavities, with unlimited size and weight. Both single-piece production, can also be mass production, the use of most of the material from a wide range of sources, low prices, but also available scrap and waste parts, so the cost is low. Castings and parts of the shape and size close to the processing allowance is small. Casting...

Ningbo Hexin Molding Co., Ltd. in the era of rapid development of information, based on the development of science and technology, information technology. A small program was released on WeChat. As long as the WeChat search Ningbo Hexin, you can check Ningbo Hexin, which greatly facilitates new and old customers to recognize the development of Ningbo Hexin. The strategic direction of the current stage of development . Ningbo Hexin shows a variety of aluminum alloy products through WeChat applet. The range of Ningbo Hexin products and services process includes: Let customers intuitively understand the range of products produced by Ningbo Hexin: