40 years history of gravity die casting machine manufacturer in China

PINO’s automated tilting gravity die casting machine can customize the equipment you want according to your gravity die casting parameters.

Leon Ling

Leon Ling

Global Marketing Manager for PINO Machinery

PINO Gravity Casting Machine is a brand with a history of 40 years. Looking back at the 40-year history of PINO’s growth, we established a factory in Changhua, Taiwan in 1978. At that time, our company name was Orieno Precise Hardware (Xiamen) Co., Ltd. In 1988, invested and built a factory in Xiamen to establish PINO Xiamen factory. In 1999, the Xiamen factory independently accounted for and started global trade. PINO’s first-generation brass gravity casting machines were exported to various countries around the world. Countries such as Turkey, Brazil, Pakistan, and Egypt can see the PINO brand. Now PINO’s gravity casting machine has been upgraded to more than ten generations, and the machine operates stably without any minor problems. Today we will talk about China’s gravity casting industry around PINO’s 40-year history of gravity casting machines.

What is Gravity Die Casting?

Gravity casting is a common casting process that uses gravity to inject molten metal into a mold to form the desired casting. In the process of industrialization, gravity casting, die casting and machining have played a very important role.
Gravity die casting machine is a kind of equipment that utilizes the effect of gravity to die-cast metal parts. The working principle of gravity casting machine is to use gravity to flow molten metal from the casting furnace or holding furnace into the casting mold.

The main components of gravity die casting:

Furnace body

Furnace used to heat metal to melting temperature. The furnace body is usually heated electrically to ensure that the metal reaches a suitable melting state. PINO also has corresponding electric furnace products, which have also passed CE certification.

casting mold

Consists of upper and lower dies for forming the desired casting shape. Casting molds can be metal molds, sand molds or ceramic molds, depending on the specific application and material requirements.

Gating system

A system for directing molten metal into casting molds. It usually includes casting spouts, gates and flow channels for liquid metal to ensure that the metal can flow to the correct position in the mold.

Control System

Used to control the operation and parameters of the gravity casting machine. The control system can monitor and adjust the furnace temperature, pouring speed, pressure and other process parameters to ensure the quality and consistency of castings.

The development history of gravity casting machine

In the case of gravity pouring, it is really possible that since the Bronze Age, our ancestors have used gravity to pour and cast some daily necessities or weapons. Let’s talk about the history after the emergence of modern gravity casting machines. Before 1980, gravity casting was all done by hand. Foundry workers used simple tools and equipment, such as iron spoons or funnels, to pour metal melted at high temperature into molds. This method is simple but the production efficiency is extremely low. , and the quality is not good, a lot of liquid metal is unevenly distributed, the scrap rate is very high, and it is difficult to achieve mass production.

With the advancement of industrialization, the first batch of mechanized gravity casting equipment appeared after 1980. At that time in Taiwan, our former company Orieno used such mechanized equipment to produce some metal parts. At that time, the gravity casting machine was operated manually, using manpower to tilt, lift the platform, and then pour molten metal into the mold. At this time, the efficiency of gravity casting has gradually improved, and the quality and production efficiency of die-casting parts have been greatly improved due to the emergence of molds.

Around 1999, with the advancement of industrial technology and the development of automation, the first generation of true gravity casting machines appeared. PINO also launched the first-generation gravity casting machine at this time, and the degree of automation will be much higher than the previous level. Our machines are starting to use hydraulic or pneumatic systems to control the casting process, which is more automated and enables more precise pouring control.

After 2000, with the development of electronic technology and computer control technology, the third generation of gravity casting mechanized equipment began to appear. These machines are equipped with advanced control systems and sensors for a more precise, stable and repeatable casting process. At the same time, the advancement of material science has also promoted the development of gravity casting machines, and more types of metal alloys have appeared for gravity casting processes.

To this day, modern gravity casting machines use advanced hydraulic or pneumatic systems, equipped with sophisticated pouring systems and control systems, capable of efficient, precise and automated casting processes. PINO is also constantly evolving and improving in this process to meet the needs of different industries. From brass gravity die-casting machines to aluminum alloy gravity die-casting machines, our continuous progress and innovation have resulted in the current automatic gravity die-casting machines.

Generally speaking, gravity casting machines are constantly evolving and improving, from the earliest manual operation to modern automation equipment, the development history of gravity casting machines has witnessed the progress and innovation of casting technology.

  • What materials are suitable for gravity die casting?

    Aluminum alloy: Aluminum alloy is one of the most commonly used materials for gravity die casting. They have good flow, high strength and excellent thermal conductivity. Common aluminum alloys include A380, A383, ADC12, etc., which are used in the manufacture of auto parts, electronic equipment casings, industrial equipment, etc.

    Magnesium alloys: Magnesium alloys are also widely used in gravity die casting. They have lower density, excellent mechanical properties and better rigidity. Magnesium alloys can provide more lightweight solutions. Common magnesium alloys include AZ91D, AM60B, etc., which are used to manufacture auto parts, aerospace parts, etc.

    Copper Alloy: Gravity Casting We have a PN2B03B model machine for the production of copper-nickel alloy (Copper-Nickel Alloy) and brass (Brass). Many die cast parts require high electrical conductivity and excellent heat resistance in applications. Copper alloys provide good electrical conductivity and corrosion resistance.

    Zinc alloy: Zinc alloy is widely used in the manufacture of small precision parts and decorative parts in gravity die casting. Zinc alloys have good fluidity, excellent corrosion resistance and a low melting point. Common zinc alloys include Zamak series, such as Zamak 3, Zamak 5, etc.

    The above are the most commonly used gravity die-casting materials. The specific material selection needs to consider the application requirements in terms of mechanical properties, corrosion resistance, and electrical conductivity. The most suitable materials and corresponding gravity die casting machinery have been identified.

Looking back at the development of gravity die casting machines in the past 40 years, it also represents the development of gravity die casting in China. The PINO brand is just like our machines, without too much publicity and promotion. But it has also served many big brands around the world, such as ROCA and so on. As a manufacturer of gravity die casting machines in China, our vision is to contribute a little bit to the global industrialization process.

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