A CURVED RUNNER STRUCTURE THAT PREVENTS CASTING DEFECTS.

Abstract

The invention is a gating system that prevents defects caused by turbulence and sand abrasion in the casting industry. The invention basically consists of a curved gating element (40) that gradually balances the velocity of the liquid metal entering the casting chamber (10) via an integrated curved route instead of the conventional vertical and horizontal gating separation, and ensures that the velocity at the nozzle inlets (50) does not exceed 1 m / s. In this way, casting stability independent of the operator's pouring speed is achieved, and rejects are prevented.

Description

1 TARIFF A CURVED RUNNER STRUCTURE THAT PREVENTS CASTING DEFECTS. TECHNICAL AREA 5 The invention deals with turbulence during the transfer of liquid metal into the mold in the casting industry. It relates to runner systems that prevent sand damage. The invention specifically addresses gas and sand defects by controlling the casting rate of the liquid metal. It involves a curved runner structure that minimizes... STATE OF THE ART In casting technology, 15 is the component that enables the transfer of molten metal from the crucible to the mold cavity. The channel network is called a gating system. A standard gating system is where the metal is poured. casting chamber (10), a vertical pipe in which the metal is accelerated by the effect of gravity runner (20), horizontal runner (30) where the metal is distributed horizontally and nozzle where it enters the part It consists of (40) entries. In classic casting systems, metal is transferred directly from a vertical column to horizontal runners. (30) is transferred. According to physical principles, the metal is transferred from a certain height (h) When poured, its potential energy (mgh) is converted into kinetic energy proportional to the square of its velocity. 1 2 𝑚𝑣2) It transforms and accelerates within the metal runner, reaching high speeds. This increase in speed with current techniques allows gases inside the mold to interfere with the metal flow. gas that is not dragged and evacuated in time creates turbulence, affecting the metal. This causes it to become trapped inside. Furthermore, the liquid metal moves at a high speed. By excessively heating and eroding the sand molds and cores in the areas it passes through, it damages the sand particles. This causes the nozzle to enter the workpiece. In cast iron casting, the nozzle entry speed is 30. Although it is considered ideal for speeds not to exceed 1 m / s, speed control on classic runners is only possible with these runners. It depends not only on the design but also on the operator's pouring speed. This situation affects the pouring process. 2 due to errors, high scrap rates, increased costs and loss of workforce It causes. Ultimately, the problems mentioned above, which cannot be solved with current technology, are related. This has made it necessary to make an innovation in the technical field. 5 A BRIEF DESCRIPTION OF THE INVENTION The present invention eliminates the aforementioned disadvantages and the related technical It involves a curved road structure designed to bring new advantages to the area. 10 The main purpose of the invention is to gradually convert the potential energy of the liquid metal into kinetic energy. a curved runner structure that controls the flow rate by allowing it to pass through to present. Another aim of the invention is to optimize casting speed by adjusting the gating geometry. to minimize the operator-induced human factor and make the casting process more efficient The goal is to make it sustainable. Another aim of the invention is to increase the velocity of the liquid metal at the nozzle inlets from 1 m / s to 20 by preventing it from exceeding the limit, thus reducing turbulence and associated gas defects within the mold. The goal is to prevent. Another aim of the invention is to simulate the impact effect of metal on sand surfaces and high heat. The aim is to prevent sand ingress defects by reducing the resulting abrasion. 25 Another aim of the invention is to reduce the rejection rates caused by casting defects. The goal is to reduce total costs and labor loss. The advantages of the current invention, along with its structure and additional elements, can be best utilized in 30 years. For understanding, it should be evaluated together with the figures explained below. is necessary. 3 BRIEF DESCRIPTION OF THE FIGURES Figure 1 shows the appearance of the vertical and horizontal gating casting system in the current technology. Figure 2 shows a general perspective view of the curved runner structure that is the subject of the invention. Figure 3 shows a top perspective view of the curved runner structure, which is the subject of the invention. 5 REFERENCE NUMBERS Casting Chamber Vertical Runner Horizontal Runner 10 40 Foldable Runner Rugs 50 Breast Entries DETAILED DESCRIPTION OF THE INVENTION This detailed explanation aims to provide a better understanding of the innovation in the invention. This is explained with examples that will not create any limiting effect. The invention involves transferring the velocity and energy of liquid metal within casting molds along the flow path. It is a technical structure that transmits the current to the component by damping it. The most fundamental feature of this structure is; The vertical runner (20) in the form of a straight pipe in classic casting systems and the metal part 20 The functions of the horizontal runner (30) which enables distribution to the entrances are all in one structure. It includes a convoluted runner (40) that connects the liquid. The aforementioned convoluted runner (40) is liquid to enable the metal to be oriented vertically and then horizontally It is structured. The curved runner (40) in question allows the metal entering from the casting chamber (10) to pass directly through 25 a curved path that prevents free fall and changes the flow from the starting point. It has a geometry that guides along a route. The speed in traditional systems This structure, replacing the straight vertical pipes where the metal's potential was increasing uncontrollably, It allows its energy to be gradually converted into kinetic energy. The curved runner (40) increases the velocity of the liquid metal through angular frequencies and form resistance 30 while damping, it also ensures the homogeneous transfer of metal into the mold cavities. 4 This ensures that when the liquid metal reaches the nozzle inlets (50), the speed limit of 1 m / s is reached. It fills the gap in the part without creating turbulence, remaining underneath. This integrated form of flow Optimizing it through this process allows for the regular release of gases within the mold. while recognizing it, it also completely eliminates the abrasive effect that fast metal creates on sand surfaces. It removes. 5

Claims

REQUESTS 1. Liquid metal used in the iron casting industry to prevent casting defects. a casting chamber (10) into which the liquid metal is poured and a nozzle through which the liquid metal enters the part It is a gating system that includes inlets; its feature is to absorb the energy of the liquid metal. 5 so that at least the nozzle inlets (50) are located between the casting chamber (10) and the nozzle inlets (50). It includes one curved runner rug (40).

2. According to Claim 1, it is a runner system and its characteristic is that the mentioned curved runner (40) is liquid a 10 that will limit the flow rate of metal at the nozzle inlets (50) to a maximum of 1 m / s. It has angular frequency and curved geometry.

3. A gating system according to claim 1 or 2, characterized by the vertical and horizontal flow of liquid metal. a curved structure formed in such a way as to allow it to be directed in the right direction It includes a curved runner (40). 15

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