Proizvodi za livenje od legura bakra

1. Uvođenje

Investment casting—also known as the lost‑wax process—extends far beyond steel and nickel alloys.

It thrives in the copper‑alloy world, providing unmatched precision for complex geometries.

Copper‑alloy investment casting combines the thermal and electrical advantages of copper with the design freedom of ceramic molds.

Samim tim, manufacturers in elektronika, ulja & plin, arhitektonski, i marinac sectors rely on these castings to meet stringent performance requirements.

Štaviše, growing demand for miniaturized electrical components and corrosion‑resistant hardware continues to drive global market growth, projected at 5.2 % Cagr kroz 2029.

2. What Is Copper‑Alloy Investment Casting?

In copper alloy Investicijska livenja, a wax or 3D‑printed polymer pattern replicates the final part. After stacking patterns on a gating tree, technicians build up a ceramic shell around them.

Jednom kada se ljuska izliječi, they melt out the wax (hence “lost‑wax”), preheat the shell, and pour molten copper alloy.

Nakon skrućivanja, the brittle shell breaks away, revealing a near‑net‑shape component.

This process achieves tolerances as tight as ± 0.1 mm and surface finishes down to Ra 0.8 μm, reducing downstream machining.

3. Copper Alloys Used in Investment Casting

Copper alloys are widely used in investment casting due to their excellent castability, Otpornost na koroziju, toplotnu i električnu provodljivost, i dobra mehanička svojstva.

Here are the main categories of copper alloys commonly used in this process:

Bronze

Bronzes are primarily copper alloys with tin, though modern bronzes can also contain elements like aluminum, silicijum, i fosfor. Common types include:

• Fosfor bronza (Cu-Sn-P): Known for high strength, otpornost na habanje, i otpornost na koroziju. Ideal for bearings, zupčanici, i pomorske komponente.
• Aluminijska bronza (Cu-Al): Exhibits excellent strength, Otpornost na koroziju (posebno u morskoj vodi), i dobra otpornost na habanje. Used in aerospace, Morski hardver, i komponente ventila.
• Silicijum bronza (Cu-Si): Offers good strength, Otpornost na koroziju, i formibilnost. Often used in architectural applications and marine fittings.

Brasses

Brasses are copper-zinc alloys known for their good strength and excellent machinability.

• Yellow Brass (Cu-Zn): Has excellent castability and is used for decorative items, Vodovodne spojnice, and low-load mechanical components.
• High-Strength Brasses: May include additional elements like manganese, gvožđe, or aluminum for improved mechanical properties.

Nickel Silvers (Cu-Ni-Zn)

These are copper alloys with nickel and zinc that resemble silver in appearance.

• Used in applications requiring good corrosion resistance, umerene snage, i estetska privlačnost (E.g., muzički instrumenti, Dekorativni predmeti).

Berilijum Bakar (Cu-Be)

Beryllium copper is a high-performance alloy that offers exceptional strength, tvrdoća, i provodljivost.

• Used in precision components, kao što su opruge, Konektori, and non-sparking tools. Međutim, due to health hazards during processing, it requires careful handling.

Common Copper Alloy Grades Used in Investment Casting

4. Material Properties of Copper Alloy Castings

Mehanička svojstva

• Duktilnost: Brass alloys typically offer excellent ductility, allowing for easy post-casting machining and forming.
• Otpornost na habanje: Aluminum bronze and bearing bronze are particularly suited for high-load, low-speed applications due to superior wear characteristics.
• Snaga umora: Beryllium copper excels in applications requiring high fatigue resistance and spring performance.

Thermal & Električna provodljivost

Toplotna provodljivost:

• Čisti bakar: ~385 W/m·K
• Mesing: ~100–150 W/m·K
• Bronza: ~50–70 W/m·K
• Berilijum Bakar: ~100–125 W/m·K

Električna provodljivost (as % IACS):

• Čisti bakar: 100%
• Mesing (C36000): ~28–30%
• Bronza: ~15–20%
• Berilijum Bakar: ~22–25%

Otpornost na koroziju i trajnost okoliša

Okruženje	Suitable Alloys	Bilješke
Morska voda	Sa nama (C70600), Aluminijska bronza (C95800)	Excellent resistance to pitting, pukotina, and biofouling
Industrial Atmosphere	Mesing, Tin Bronze	Good general atmospheric resistance
Acidic Media	Fosfor bronza, Sa nama	Resists sulfuric and organic acids
Drinking Water	Low-lead Brass (C46400, EnviroBrass®)	Compliant with modern lead regulations
High-Temp Exposure	Berilijum Bakar, C95400	Suitable for elevated temperature strength and oxidation

5. Pros and Cons of Copper-Alloy Castings

✅ Pros of Copper-Alloy Castings

Odlična otpornost na koroziju

• Copper alloys—particularly bronzes and copper-nickel grades—excel in resisting corrosion in seawater, kiseo, i industrijsko okruženje.
• Ideal for marine hardware, Vodovodne spojnice, and chemical process components.

Visoka toplotna i električna provodljivost

• Brass and pure copper-based alloys have excellent electrical conductivity (do 100% IACS for pure copper).
• Thermal conductivity ranges between 100–400 W/m·K, making them ideal for heat sinks, Električni konektori, i terminale.

Superior Castability

• Copper alloys flow well during casting, enabling the production of thin-walled, complex shapes with tight tolerances.
• Suitable for investment casting, allowing for intricate designs without the need for extensive post-processing.

Diverse Mechanical Properties

• Ranges from soft, ductile brass (C36000) to high-strength beryllium copper (C17200) with tensile strengths exceeding 1,200 MPa.
• Aluminum bronzes offer excellent wear resistance and tensile strength for high-load parts.

Estetska privlačnost & Finishability

• Attractive reddish-yellow tones in brasses and bronzes make them ideal for decorative, arhitektonski, and artistic applications.
• Polishes well and accepts patinas or protective coatings for enhanced aesthetics.

Reciklabilnost & Environmental Benefit

• Copper and its alloys are 100% recyclable without loss of properties.
• The use of low-lead or lead-free brasses (E.g., EnviroBrass®) supports sustainable manufacturing practices and meets drinking water regulations.

⚠️ Cons of Copper-Alloy Castings

Moderate to High Material Cost

• Bakar, nikl, and tin are relatively expensive base elements.
• Berilijum bakar, while offering excellent strength and conductivity, is among the most costly copper-based alloys.

Lower Strength Compared to Steel

• While strong in their category, copper alloys typically have lower tensile and yield strengths than carbon and alloy steels.
• For highly loaded or structural components, additional design considerations may be necessary.

Ograničene performanse pri visokim temperaturama

• Most copper alloys soften at elevated temperatures above 300°C.
• Exceptions include aluminum bronze and beryllium copper, which maintain mechanical integrity at moderately high temperatures.

Casting Defects Risk

• As with many casting processes, poroznost, skupljanje, or segregation can occur if not properly managed.
• Requires experienced foundry control and post-cast inspections.

Machinability Challenges

• Neke legure (E.g., aluminijum bronza, high-tin bronzes) can be difficult to machine due to hard intermetallics.
• Tool wear is more frequent, and special cutting tools or techniques may be needed.

6. Applications of Copper-Alloy Castings

Marine i Offshore

Copper alloys—particularly aluminijum bronza i nickel-aluminum bronze—are highly resistant to seawater corrosion, bioobraštanje, and cavitation.

• Propeleri i impeleri
• Pump and valve bodies
• Shaft sleeves and bearings
• Marine fasteners and pipe fittings

Plumbing and Fluid Handling

Brass and leaded bronze castings are commonly used in plumbing systems due to their machinability, Otpornost na koroziju, and low friction properties.

• Slavine, ventili, i armature
• Priključci za cijevi i spojnice
• Water meter housings
• Backflow preventers

Electrical and Elektronika

Due to their excellent electrical conductivity, copper-based alloys are used for both power transmission and signal components.

• Connectors and terminals
• Bus bars
• Circuit breaker and switchgear components
• Grounding equipment

Industrijske mašine

High-strength copper alloys are used for wear- and load-resistant parts in heavy machinery.

• Gears and gear blanks
• Bushings and thrust washers
• Guide rails and wear plates
• Komponente kalupa

Aerospace i odbrana

Aluminum bronzes and beryllium copper are used in aerospace and defense for their strength, Otpornost na umora, and non-sparking properties.

• Komponente stajnog trapa
• Strukturni nosači
• Precision connectors and clips
• Non-magnetic and spark-resistant tools

Automobilski

Copper alloy castings are used in systems requiring both thermal conductivity and mechanical strength.

• Cooling system components (E.g., water pump housings)
• Transmission bushings
• Delovi kočnica
• Komponente motora

Decorative and Architectural

Brasses, bronze, and nickel silvers are popular for their appearance and corrosion resistance.

• Statues and sculptures
• Door handles and hardware
• Lighting fixtures
• Grilles and gates

Ulje i plin / Rudarstvo

Non-sparking, corrosion-resistant copper alloys are ideal for hazardous or abrasive environments.

• Alati za spuštanje
• Valves and couplings
• Non-sparking hand tools
• Kućišta pumpe

7. Proizvodi za livenje od legura bakra

Looking for custom copper alloy odljevci za ulaganje at competitive prices with trusted quality?

Ovo specializes in OEM brass, bronza, and copper alloy castings using the precision lost wax process, delivering exceptional detail, ponovljivost, i mehaničke performanse.

Što nudimo:

• Materijali: Mesing, bronza, red brass, silicon bronze, and copper-based alloys
• Proces: Preciznost lost wax investment casting, optimized for intricate geometries and tight tolerances
• Kapacitet: Small to medium-sized castings, complex surface finishes, and consistent batch quality
• Usluge:

• • Custom casting design and prototyping
  • Obrada, površinski tretman, i završna obrada
  • Engineering consulting and DFM (Dizajn za proizvodnost) support
  • Full compliance with international standards (ASTM, Iz, On je)

Why DEZE Technology Co., Ltd.?

• ISO 9001 & IATF 16949 Certified: Rigorous quality systems ensure you get defect‑free castings every time.
• In‑House Tooling & Rapid Turnaround: Pattern design through final inspection under one roof—typical lead times of 4–6 weeks.
• Global Supply Chain: Competitive Chinese price levels, with logistics support for just‑in‑time delivery worldwide.
• Full Value‑Add Services: CNC obrada, elektroplata, passivation and assembly available to streamline your supply chain.

Kontaktirajte nas danas to discuss your custom copper alloy casting needs.

Share your drawings or 3D models, and our team will help you develop the most cost-effective and high-performance solution for your project.