Quel type de cire est utilisé pour le moulage à la cire perdue ?

Precision casting utilizes different types of wax to create molds. Today, foundries use special synthetic waxes instead of beeswax. The main types of wax include filled mold wax, unfilled mold wax, gating wax, adhesive wax, and water-soluble wax. Each type of wax plays a unique role in the casting process. KEMING provides precision casting solutions using high-quality wax materials. Their expertise delivers reliable results for numerous industries.

Principaux enseignements

Coulée en cire perdue uses different types of wax. These waxes include filled, unfilled, gating wax, adhesive wax, and water-soluble wax. Each wax has its specific purpose.
Choosing the right wax is crucial. It helps in creating smooth and precise castings. This impacts the quality and strength of the final product.
Filled mold wax is suitable for complex mold designs. It has high strength and low shrinkage. Unfilled mold wax is less expensive and easy to recycle.
Water-soluble wax is environmentally friendly. It allows for clean mold creation. This wax is ideal for small, precise parts in aerospace and medical fields.
Adhesive wax helps in quickly and securely assembling molds. It reduces errors and improves the casting process.

Types of Wax in Investment Casting

Precision casting uses different types of wax to create molds. KEMING selects high-quality wax materials to deliver exceptional results for numerous industries. The choice of wax impacts the smoothness and precision of each casting. Using the right wax helps ensure each part meets stringent standards.

Pattern Wax Varieties

Mold wax is fundamental to precision casting. It shapes the initial mold and determines the product’s details. KEMING offers various mold waxes, such as filled and unfilled mold waxes. Filled mold wax contains additives that make it stronger and reduce shrinkage. This wax is best suited for large or complex molds. Unfilled mold wax is less expensive and easy to recycle.

Pattern wax types are:

Mold wax: Replicates minute shapes and maintains their accuracy.

Filled mold wax: Contains fillers to increase strength and reduce shrinkage.

Unfilled mold wax: Simple in structure and easy to recycle.

The table below shows how different wax types affect casting characteristics:

Type de cire	Melting Point (°C)	Hardness (Shore)	Shrinkage Rate (%)	Suitable For
Wax base wax material	50-60	Faible	N/A	Aluminum alloy, copper alloy
Rosin-based wax material	70-85	≥25	0.8-1.2	Stainless steel, high-temperature alloys

KEMING ensures that each type of model wax has good strength and flexibility. Their filled model waxes are suitable for complex designs and maintain dimensional accuracy.

Cire pour coureur

Gating wax connects the model to the gating system. It guides the molten metal into the mold. Gating wax needs to have good fluidity and be resistant to cracking. KEMING selects gating waxes with good fluidity to reduce defects and improve yield.

Gating waxes have varying melting points. Low-temperature waxes have melting points below 60°C. Medium-temperature waxes have melting points between 60°C and 120°C. High-temperature waxes have melting points above 120°C. KEMING selects the appropriate gating wax for different applications to ensure smooth metal flow and maintain part strength.

Cire collante

Bonding wax is used to bond model components together. It can repair small defects and connect parts. KEMING uses bonding wax for fast and secure assembly. This wax forms a strong bond and can be used with robotic tools. The small size of the bonding wax makes it ideal for busy foundries.

Features/Benefits	Description
High accuracy, high yield, low scrap rate	Produces dimensionally accurate parts and reduces waste.
Fast and versatile	Works quickly and is suitable for a variety of applications, saving time.
Lower cost than standard APAS	Reduces costs for foundries.
No additional investment for tooling	Uses existing tools, requiring no additional capital investment.

Bonding wax helps KEMING produce smooth and strong castings. No rework is needed, saving time and money.

Cire soluble dans l'eau

Water-soluble wax is used to create hollow structures and complex shapes. This wax dissolves in water, leaving a clean mold. KEMING uses water-soluble wax to manufacture parts with many details and internal cavities. Water-soluble wax is environmentally friendly and easy to clean.

Water-soluble wax:

Manufactures strong castings with hollow structures.

Dissolves in water without leaving any residue.

Helps keep molds strong and smooth.

KEMING’s casting process utilizes water-soluble wax to achieve exquisite designs and consistent results.

Investment Casting Waxes: Properties and Uses

Rempli de cire

Filled wax is crucial in precision casting. Manufacturers add fillers to enhance its strength. These fillers help the wax maintain its shape. The wax undergoes minimal dimensional changes during model making. KEMING uses filled wax to manufacture parts requiring high precision. This wax provides a smooth surface and accurate dimensions. It is ideal for large or complex models. Filled wax is resistant to shrinkage or deformation.

Filled pattern wax has many good points:

Excellent dimensional stability

Reduces porosity, sink marks, and shrinkage

Provides a smooth surface

The table below shows how filled wax helps in casting:

Fonctionnalité	Description
Dimensional Pattern Reproducibility	Patterns stay the right size.
Higher Stability	Parts better maintain their shape.
Reduced Shrinkage	Less dimensional change during cooling.
High Quality Surface Finish	Better appearance of castings.
Low Melt Viscosity	Good wax flow for producing high-quality molds.

KEMING selects filled mold wax for workpieces requiring precision parts. This wax helps create castings with perfect dimensions and a smooth appearance.

Cire à motif non rempli

Unfilled mold wax does not contain any fillers. This wax is simple and cost-effective. Many foundries use unfilled mold wax to produce ordinary parts. These parts do not require extra strength. KEMING uses unfilled mold wax to create molds that are easy to recycle. This wax melts cleanly with minimal residue. This helps keep the molds clean.

Unfilled mold wax is best suited for small or simple parts. It allows workers to quickly inspect the parts. Using this wax can speed up production. KEMING’s team uses unfilled mold wax when fast production is needed.

Tip: Unfilled mold wax is the best choice if you need to save costs and reuse the wax.

Wax Selection for Complex Parts

Choosing the right wax is crucial for complex casting jobs. The wax must be suitable for the shape and size of the part. Filled mold wax is suitable for large parts with intricate details. It resists shrinkage and maintains sharp details. Unfilled mold wax is better suited for simple, small parts. It helps in the rapid production of parts.

KEMING’s experts study each workpiece before selecting the wax. They consider the shape of the part and the required surface finish. They also consider the intended use of the part. Their team uses special wax blends to meet stringent requirements. The right wax ensures that the castings are strong and dimensionally accurate.

The table below lists some key characteristics of casting waxes:

Propriété	Description
Composition	Wax consists of natural or synthetic waxes, fillers, and water.
Stabilité dimensionnelle	Used to predict the shrinkage of the part.
Shrinkage Characteristics	Affects the dimensional changes of the part.
Additifs	Resins, plastics, fillers, and oils can improve the performance of the wax.
Finition de la surface	Contributes to a good appearance of the final part; depends on the ceramic filler.
Propriétés mécaniques	The wax must not break easily during handling or coating.
Solidification Contraction	Low shrinkage helps maintain dimensional accuracy.
Fluidity	The wax must be able to fill small shapes and complex patterns.
Dewaxing Behavior	The wax should be easy to release from the mold without damaging it.
Residue After Burnout	Less residual wax is better, contributing to clean castings.
Economic Factors	Cost-effectiveness is crucial when selecting wax materials.
Inspection Capability	The surface should be easy for workers to inspect for defects.

KEMING’s casting waxes help customers achieve excellent casting results. Carefully selected wax materials enable the casting of parts that meet the high standards of numerous industries.

Specialty Waxes in Investment Casting

Water-Soluble Wax Applications

Water-soluble wax is crucial for manufacturing hollow parts. This wax melts in water, leaving a clean mold. KEMING uses water-soluble wax to manufacture parts requiring extremely high precision. These parts are used in the aerospace, medical, automotive, and energy sectors. These industries demand parts with smooth surfaces and perfect shapes.

L'industrie	Applications	Avantages
Aérospatiale	Turbine blades, lightweight parts	Manufactures intricate internal shapes
Médical	Outils chirurgicaux, implants	Meets stringent safety and quality standards
Automobile	Composants du moteur	Improves part performance and lifespan
L'énergie	Turbine and machinery parts	Provides robust and durable high-quality parts

Water-soluble wax offers numerous advantages:

Easy demolding for clean casting
Suitable for small and complex shapes
Results in smooth and highly accurate part surfaces

The KEMING team chooses water-soluble wax to meet stringent standards. Their process is stable and reliable, helping customers obtain higher-quality products.

Sticky Wax for Assembly

Adhesive wax helps workers quickly assemble wax patterns. This wax has excellent bonding properties, ensuring each component is securely held in place. KEMING uses adhesive wax to quickly and accurately create robust molds.

Fonctionnalité	Description
Bonding Strength	Securely bonds wax patterns together
Cohesive Strength	Maintains part strength during movement or handling
Low Odor and Smoke	Creates a safe and comfortable work environment
Formulations	Offers different curing times to suit various applications

Adhesive wax offers numerous advantages:

Good adhesion ensures secure mold assembly
Fast curing improves work efficiency
Maintains a clean and safe work environment

KEMING uses adhesive wax to maintain mold stability and accuracy. Their process reduces errors and improves the quality of each casting.

Tip: Specialty waxes like water-soluble and adhesive waxes help KEMING manufacture precise and robust castings. New wax formulations are stronger and retain details better. They also have good heat resistance, helping to create higher-quality parts for numerous industries.

In investment casting, choosing the right wax pattern is crucial. Each wax pattern has specific advantages for different applications. Filled wax patterns are suitable for manufacturing robust molds. Water-soluble wax molds are suitable for manufacturing hollow molds. The Kemin team employs intelligent wax molding methods and rigorous testing to ensure that each wax mold is of high quality. Their expertise helps customers obtain precise molds and excellent casting results. The company adheres to international standards and provides durable molds. Kemin’s quality inspection includes:

Quality Checks at KEMING
Tests for hardness, material, magnetic particles, and X-rays
Looks at patterns and checks how strong they are
Follows ASTM, DIN, JIS, AAR, and other rules

Customers should choose a company with sophisticated wax mold manufacturing technology, modern equipment, and extensive experience in hard mold manufacturing.

FAQ

What types of wax are primarily used in investment casting?

Investment casting utilizes various types of wax. These waxes include pattern wax, gating wax, bonding wax, and water-soluble wax. Each type of wax contributes to the creation of robust metal parts. KEMING selects the appropriate wax based on different applications.

How do wax molding tools improve casting quality?

Wax molding tools shape the wax into precise forms. This ensures that each wax pattern conforms to the design specifications. KEMING uses specialized tools to create robust wax patterns for complex casting tasks.

Why do foundries choose water-soluble wax?

Water-soluble wax helps create cavities within the casting. These waxes melt quickly, leaving a clean mold. KEMING uses water-soluble wax to manufacture complex parts with smooth and intricate shapes.

What is the role of wax patterns in investment casting?

Wax patterns shape the wax into intricate designs. These patterns guide the various steps of the investment casting process. KEMING’s wax patterns can produce precision parts for automobiles, trains, and ships.

How do wax molding tools support custom projects?

Wax molding tools enable foundries to shape wax patterns according to specific designs. KEMING uses these tools to create custom wax patterns for special orders. Their team adjusts the wax formulation based on stringent requirements.