Fundição por gravidade- It is a permanent mold casting that involves the flowing of molten metal into a steel or iron mold by the effect of gravity alone. In contrast to sand casting, reusable molds are used in gravity die casting, which offers finer dimensional accuracy, acabamentos de superfície, and increased mechanical properties.
Na precisão TOPS, we work hand in hand with the customer from the initial stages to the end product. Gravity Die Casting Services are best suited to the manufacturer who needs quality and cost to balance, especially when the components need to be of a higher grade of strength than sand cast components, yet not as highly tooled as high-pressure die castings.
Our features include;
Gravity Die Casting allows controlled and uniform solidification to take place in a permanent mold, producing a dense and uniform microstructure. The metal mold allows quicker heat extraction in comparison to sand casting, and optimizes grain structure and internal integrity. The density results in increased reliability of the part and life cycle.
Components produced through gravity die casting are stronger in terms of mechanical strength when compared to sand cast parts. The high-grade grain structure and few internal defects make it very strong in tensile strength, and increase its fatigue tolerance. This renders gravity die cast parts applicable in functional and load bearing application.
With the employment of high precision machine moulds, there are smooth surface finishes and uniformly finished surfaces. Gravity die cast parts typically have only to be fine-tuned a little, and any subsequent processing time and cost is reduced, with the result of a clean external surface appearance.
Gravity die casting is cheaper to tool than high-pressure die casting, and it has a reduced start-up cost of molds. This renders it a cost-effective option in the low-to-medium production volume, and yet high quality and dimensional accuracy.
Fundição por gravidade. It is a metal casting procedure where molten material is poured into a reusable metal mold and left to fill the cavity by the force of gravity. Mold is usually pre-heated to apply coating to regulate the flow and solidification behaviour of the metals.
The main features of gravity die casting are:
This is common in the automotive and industrial machinery industry, as well as in the general engineering use,s where quality and cost-effectiveness are paramount.
The flow of our gravity die casting processes at TOPS Precision is designed in such a way as to achieve efficiency, qualidade, e repetibilidade:
Every project has an extensive design review. Drawing and 3D models are analyzed by our engineers to streamline the wall thickness, ângulo de rascunho, and gating design in the case of gravity die casting. Early engineering entails manufacturability and repeatability. This step is also useful in determining the possible casting difficulties early enough so that there is little revisions towards the later stages in the production cycle. Optimization in design at this stage has a direct impact on cost control and the reliability of parts.
We produce robust metal molds that will have a high service life and repeatability of casting. Mold design is concerned with the athletic metal flow, reinforced cooling, and the convenience of part hollowing. Good tooling provides good dimensional stability at repeated cycles. This creates stable part geometry and shortened maintenance downtime.
The molten metal is then poured into the heated mold and left to fill the mold by gravity. Pouring and solidification are controlled to provide a seamless structure and fewer defects. The gravity pressing ensures the reduction of turbulence, resulting in denser castings that possess better mechanical characteristics. The repeatability of the process parameters is also attentively observed.
When the solidification occurs, the mold is opened, and the casting is removed. Depending on the needs of the application, parts can be trimmed, rebarbado, or finished on the surface. Secondary operations will be used to ensure close tolerances and a smooth surface. Complete components are ready either to be assembled or machined further, where necessary.
A casting is checked for dimensional, superfície, and structural integrity. We have a quality system, which is certified by ISO 9001, that is used to guarantee consistency and adherence to customer specifications. Close-out records of inspection will give 100 percent traces of a batch. This will ensure reliable quality at all levels of production.
TOPS Precision can provide Gravity Die Casting solutions such as:
Our gravity die cast prototypes can be used to assist customers in confirming design and material performance. These samples are highly similar to final production parts, which cuts down the development risk and facilitates quicker decision-making. Procedural testing is also supported by prototype runs in order to test functionality during real operating situations. This will assist in validating performance before going to production.
Our team is also in the production of custom-designed gravity die cast parts to suit a functional and dimensional specification. Both components are designed to give the best level of strength, precisão, e durabilidade. Precision of dimensions. Dimensional Control Custom tooling and process control ensure precision of dimensional control of complex geometries. The method facilitates the reliability of quality among repeat orders.
When low to medium volume production is needed, and repeatability of quality is desired without paying a lot for tooling, then gravity die casting would be suitable. We accept stable processes so as to guarantee similar outcomes in batches. The parameters are controlled to minimize variation, as well as scrap rates. This renders gravity die casting a reliable option where mid-volume demands have to be met.
We have qualified engineers to support the project lifecycle. We collaborate with the customers to deliver cost-effective and reliable results with respect to design optimization and process improvement. The team approach assists in resolving technical problems effectively. This guarantees success in the long-term production.
TOPS Precision uses high-quality gravity die casting processes to improve the quality and performance of its castings:
Mold preheating results in even metal flow and less thermal shock. This enhances the surface finish and reduces the casting defects. Dimensional stability is also promoted by steady temperatures in the molds. Adequate preheating positively reinforces the life of the mold.
We generate effective gating systems to facilitate even filling and minimize turbulence. Good design of runners enhances the quality and consistency of parts. There is an increase in material economies as a result of reduced metal loss. This helps in reducing the total manufacturing expenses.
We stimulate directional solidification by control of cooling rates and mold design. This minimizes the shrinkage defects and increases the mechanical properties. Internal solidification is enhanced by controlled solidification. The outcome is more inflexible cast elements.
Die cast components made using gravity have provided a balanced group of characteristics that include:
Strength was enhanced over sand-cast parts.
The properties render the technique of gravity die casting appropriate for both functional and decorative components.
The following table differentiates the gravity diecasting from other diecasting processes.
Parâmetro | Fundição por gravidade (GDC) | Fundição sob pressão de baixa pressão (LPDC) | Fundição sob pressão de alta pressão (HPDC) | Fundição em Areia |
Mold Type | Permanent metal mold | Permanent metal mold | Permanent steel mold | Disposable sand mold |
Metal Filling Method | Metal flows under gravity | Metal pushed using low, controlled pressure | Metal is injected at a very high pressure | Metal is poured manually into a sand mold |
Pressure Applied | No external pressure | 0.3–1.5 bar | 1,000–20,000 psi | No pressure |
Casting Density | Alta densidade, low porosity | Very high density, minimal porosity | Moderado; risk of gas entrapment | Lower density; higher porosity |
Precisão dimensional | Alto | Muito alto | Excelente | Low to moderate |
Acabamento de superfície | Muito bom | Good to excellent | Excelente | Duro |
Espessura da Parede | Medium to thick | Medium to thick | Thin to very thin | Espesso |
Custo de ferramentas | Low to moderate | Moderado | Alto | Muito baixo |
Volume de produção | Baixo a médio | Baixo a médio | Medium to high | Very low to low |
Complexidade do design | Moderado a alto | Alto | Muito alto | Low to moderate |
Aplicações Típicas | Componentes automotivos, alojamentos, colchetes | Structural automotive and aerospace parts | Eletrônicos, bens de consumo, automotive housings | Large industrial parts, pump housings, bases de máquinas |
The following are different money-saving tips you can follow for gravity die casting;
TOPS Precision employswell-chosenn materials in Gravity Die Casting in an effort to make it durable, performant, andcost-efficient. The choice of materials is determined by the needs of the application and performance.
Material | Propriedades principais | Aplicações Típicas |
Ligas de alumínio (A356, A357) | Boa força, excelente moldabilidade, resistência à corrosão | Partes automotivas, alojamentos, colchetes |
Ligas de alumínio-silício | High fluidity, Bom acabamento superficial, e estabilidade dimensional | Complex-shaped industrial components |
Heat-Treatable Aluminum Alloys | Enhanced strength after heat treatment | Structural and load-bearing components |
Ligas de magnésio (On Request) | Leve, good vibration damping | Automotive and lightweight applications |
Os principais benefícios incluem:
The following are some of the problems that gravity die casting faces:
TOPS Precision deals with these issues by using high-level process control, competent technicians, and idealized mold design.
TOPS Precision is an integrated die casing company that incorporates high-quality and professional engineering skills that provide stable casting solutions. We are an extended-term manufacturing partner, and we assist customers with the idea up to production. Our Die Casting Services on gravity are guaranteed.
All of the gravity die casting programs at TOPS Precision are supported by solid quality assurance, como:
We guarantee reliable parts that can be machined, assembled, or used.
Low to medium volume production should be done via gravity die casting.
Alloys of aluminum are the most used ones since they are castable and strong.
Morrer de elenco, gravity gives a higher surface finish and mechanical qualities.
Sim, lots of aluminum parts, which are die-cast, can be heat-treated.
Sim, TOPS Precision offers the services of CNC machining and finishing.
Absolutamente. We have full design-for-manufacturability support, as well as our engineers.