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What should be paid attention to in the process of the lost-flow mold production line

The pouring process of the lost foam production line is the process of steel liquid filling and foam mold evaporation. Throughout the process, it should be noted that: (1) The runner shall be filled with molten steel from beginning to end. If it is not met, because the coating strength is limited, it is easy to cause sand collapse and air intake, resulting in casting defects. (2) When pouring molten steel, grasp it to ensure stability, accuracy and speed. Instantly fill the pouring cup so that it flows in rapid succession, about one ton of molten steel a minute. If the molten steel of the casting in the same box is cut off, air will be sucked in, causing the sand hole to collapse or increase the porosity of the casting, resulting in the casting scrap.

2021

05-09

Introduction of Lost Foam Casting Materials

Lost foam casting uses a variety of casting materials, of which the important ones are model materials, casting coatings and dry sand. The model material of lost foam casting is usually called beads. Casting beads are generally divided into PS-polystyrene beads and PMMA-polymethyl methacrylate beads, both of which belong to high polymer materials, and PS PMMA polymers. For ordinary low carbon steel castings, the carbon in the model material of the lost foam casting can easily cause the surface of the production casting to require carburizing, resulting in various carbon defects.

2021

05-05

Applicability of Lost-in-process Molding Production Line

At present, the lost vanity mold production line enterprises have become an indispensable industry in the society. Its rapid development in recent years has brought a lot of convenience to automobile production and production applications of various enterprises. It fundamentally reduces the investment cost and production cost, saves the input and output time of the enterprise from all aspects, and improves the labor efficiency of the workers. Although lost foam casting is as widely used in manufacturing as other casting processes, it has its drawbacks and limitations. Not all castings are suitable for such production, according to the casting itself to analyze. We can consider whether to use this method from the following aspects:

2021

05-02

Take you to understand the lost vanish mold production line

Compared with the traditional sand casting process, the varieties and materials of lost foam products are more diversified, especially automotive aluminum alloy parts. Now, the application of lost foam casting is more and more, and the casting quality is good and the scrap rate is low. The reference process parameters of the disappearance casting process are the amount of modifier, casting wall thickness and pouring temperature, the casting strength and elongation of ZL102 alloy are selected as the evaluation index of casting mechanical performance, and the effect of casting process parameters on casting mechanical properties is studied by combining gray correlation method and orthogonal test. According to the average gray scale of each coefficient and the range of the lost mold production line, judge the evaluation of each process parameter.

2021

04-28

Process Flow Diagram of Lost Foram

Process Flow Diagram of Lost Foram

2021

02-02

27 Reasons to Choose Lost Mode Technology

The metal mold used can be used repeatedly more than 100000 times, reducing the maintenance cost of the mold.

2021

02-02

Cost of castings produced by lost-vaning mold process

Taking a single cylinder block with a single weight of 42KG, a size of 700*400, an annual output of 5000T, 400 pieces per day and cast iron material as an example, the cost analysis is as follows:

2021

02-02

Influence of Lost Foram Equipment on Lost Foram Process

The lost vanity mold process equipment is a necessary condition to ensure the implementation of the lost vanity mold process, and it also affects the quality of castings to varying degrees. Among them, the quality of the white mold, the pouring process and the sand treatment play a very important role in the whole process of the lost-form process. This paper mainly stands in the perspective of the process to the above-mentioned process of the loss of the key equipment for a concise analysis, the purpose is to clarify how to ensure the smooth implementation of the process.

2020

11-26

Process Experiment of Lost Foam Casting Iron Cap for High Voltage Wire

Insulating iron caps for high-voltage wires were originally produced by coated sand casting. With the advantages of lost foam casting in terms of material labor cost and environmental protection of operating energy, people began to try to use lost foam casting to produce such castings. This paper describes a variety of lost foam production iron cap casting process practice, so as to explore the most suitable for lost foam production casting process.

2020

11-26

Special Application of Lost Foam Casting Process in Casting Production

In recent years, the lost foam casting process has developed rapidly, and the scope of application is becoming more and more extensive. This method does not need to start the mold, repair, under the core, close the box, the modeling of the use of non-adhesive dry sand filled plastic foam pattern, in the negative pressure conditions of solid pouring. It greatly simplifies the operation process and improves production efficiency; the casting quality is good and the process yield is high; it not only improves the working environment, but also reduces labor intensity. The many advantages of the lost foam process determine that it has great potential in casting molding and special applications. For example, high manganese steel parts are treated with hot water by casting surplus. The lost foam process solves the crack defects of thin-walled, wear-resistant and heat-resistant castings. In recent years, the author has accumulated some experience in the production practice of lost pattern. In this paper, combined with the characteristics of lost foam casting, the special application of several aspects of the process is briefly described.

2020

11-26

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