1. Home
  2. About Us
  3. Competitive Advantages
  4. Precision Casting

Exceptional mechanical performance relies on excellent casting quality. Taichung Precision Machinery Foundry has adopted the Meehanite process management to enhance casting quality, meeting strict requirements for precision machinery. With a monthly capacity of 1000 tons, besides serving Taichung Precision Machinery and related companies, we also supply high-quality castings to other machinery industries. Under Professor Liu Renjie's guidance at Tunghai University's Industrial Engineering Department in 1995, we streamlined casting production for efficiency. By 1997, we achieved ISO 14001 certification.

Development History

2023

To boost productivity, we diversified our workforce by hiring Indonesian employees in addition to our existing Thai staff, all contributing to our casting production.

2010

We collaborated with vocational training centers to train casting professionals, nurturing technical expertise and fostering collaboration between industry and academia.

2009

Received recognition for "Zero Accident Working Hours" from the Council of Labor Affairs, Executive Yuan.

2006

Welcomed over a hundred industry peers for a factory visit, showcasing our exemplary labor safety measures.

1998-1999

Expanded production capacity with new furnaces and developed wear-resistant steel for industry use.

1996

Integrated services from casting to finishing to better serve our customers.

1992

Relocated to a larger factory in Houli to meet growing demands.mold and synthetic sand for the sand core, with a cupola furnace capacity of one ton, the monthly production capacity was about 27 tons. This phase laid the foundation for our development as the company grew.

1987

Restructured as the Casting Business Division, expanding business outreach and serving diverse industries. 

1986

Partnered with Meehanite Iron Foundry to introduce Meehanite process management, improving casting quality and meeting rigorous performance standards.

1984

Invested in Japanese sand recycling equipment and successfully developed water-based coatings, enhancing production capacity to 350 tons per month.

1977-1983

Implemented CO2 molding and cement molding methods, increasing production capacity to 120 tons per month.

1973-1976

Founded Taichung Precision Machinery Foundry, specializing in cast iron castings for machine tools. Using natural and synthetic sand with a one-ton furnace, achieving a monthly output of approximately 27 tons, setting the stage for growth.

Products

Flake Graphite Castings / Machine Tool Castings / Industrial Machinery Castings / 
Pneumatic/Hydraulic Machinery Castings / Spherical Graphite Castings / Meehanite Tough Castings

Flake Graphite Cast Iron Specifications Nodular Cast Iron Specifications

Flake Graphite Cast Iron Specifications

GM400 

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 40
Maximum bending load (min)
 kgm / (min)
 1420
Bending deflection (min)
 mm / (min)
 6.8
Brinell hardness
 HB
 210 / 280
Specific gravity (at 200°C)
 g / cm2
 7.4

 GA350

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 35
Maximum bending load (min)
 kgm / (min)
 1340
Bending deflection (min)
 mm / (min)
 6.8
Brinell hardness
 HB
 200 / 240
比重(200度)
 g / cm2
 7.3

GB300 

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 30
Maximum bending load (min)
 kgm / (min)
 1300
Bending deflection (min)
 mm / (min)6.8 6.8
Brinell hardness
 HB  190 / 230
Specific gravity (at 200°C)
 g / cm2
 7.3

 GC275 

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 28
Maximum bending load (min)
 kgm / (min)
 1250
Bending deflection (min)
 mm / (min)
 6.3
Brinell hardness
 HB
 180 / 225
Specific gravity (at 200°C)
 g / cm2
 7.25

 GD250 

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 25
Maximum bending load (min)
 kgm / (min)
 1130
Bending deflection (min)
 mm / (min)
 5.4
Brinell hardness
 HB
 180 / 220
Specific gravity (at 200°C)
 g / cm2
 7.2

GE200

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 20
Maximum bending load (min)
 kgm / (min)
 1120
Bending deflection (min)
 mm / (min) 4.9
Brinell hardness
 HB
 170 / 210
Specific gravity (at 200°C)
 g / cm2
 7.1
Meehanite specifications

 GM-GA 

Features
 Application
In all flake graphite cast irons, it has the highest strength and excellent hardenability, suitable for large thick-walled castings.
 Used in industrial machinery and automotive applications such as cylinder gears, bearings, machine tool bases, saddle supports, various pulleys, valves, and general mechanical castings.

 GB-GC 

Features
Application

High tensile strength and high pressure resistance, suitable for pressure-resistant castings.

 Used in industrial machinery and automotive applications such as cylinder gears, bearings, machine tool bases, saddle supports, various pulleys, valves, and general mechanical castings.

 GD-GE 

Features
Application

With moderate strength, suitable for general mechanical castings, good machinability, and high damping capacity.

Used in industrial machinery and automotive applications such as cylinder gears, bearings, machine tool bases, saddle supports, various pulleys, valves, and general mechanical castings.

Nodular Cast Iron Specifications

SFF350

Mechanical Properties
 Unit
Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 35
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 22
Elongation (min)
 % / (min)
 20
Brinell Hardness
 HB
 130 / 60
Modulus of Elasticity
 x103 kgf/ mm2
 16
Specific Gravity (at 200°C)
 g/ cm2
 71

 SF400 

Mechanical Properties
 Unit
 Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 40
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 32
Elongation (min)
 % / (min)
 15
Brinell Hardness
 HB
 140 / 190
Modulus of Elasticity
 x103 kgf/ mm2
 17
Specific Gravity (at 200°C)
 g/ cm2
 7.1

 SFP500 

Mechanical Properties
 Unit
Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 50
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 33
Elongation (min)
 % / (min)
 10
Brinell Hardness
 HB
 170 / 230
Modulus of Elasticity
 x103 kgf/ mm2
 17
Specific Gravity (at 200°C)
 g/ cm2
 7.1

 SPF600 

Mechanical Properties Unit Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 60
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 39
Elongation (min)
 % / (min)
 4
Brinell Hardness
 HB
 200 / 260
Modulus of Elasticity
 x103 kgf/ mm2
 18
Specific Gravity (at 200°C)
 g/ cm2
 7.1

 SP700

Mechanical Properties Unit Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 70
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 46
Elongation (min)
 % / (min)
 2
Brinell Hardness
 HB
 220 / 280
Modulus of Elasticity
 x103 kgf/ mm2
 18
Specific Gravity (at 200°C)
 g/ cm2
 7.2

 SH800 

Mechanical Properties Unit Mechanical Specifications
Tensile strength (min)
 kgf / mm2 / (min) 
 80
0.2% Yield Strength (min)
 kgf/mm2 / (min)
 52
Elongation (min)
 % / (min)
 2
Brinell Hardness
 HB
 260 / 320
Modulus of Elasticity
 x103 kgf/ mm2
 18
Specific Gravity (at 200°C)
 g/ cm2
 7.2
Meehanite specifications

 SH-SP 

Mechanical Properties Application
In nodular cast iron, it boasts the highest tensile strength, modulus of elasticity, and exceptional impact and stress resistance.
 Used in industrial machinery and automotive applications like cylinder crankshafts, gears, bearings, pumps, and valves for plastic machines.

 SPF-SFP 

Mechanical Properties Application
The raw castings possess high tensile strength and toughness, suitable for mechanical components requiring both strength and toughness. 
 Used in industrial machinery and automotive applications like cylinder crankshafts, gears, bearings, pumps, and valves for plastic machines.

SF

Mechanical Properties Application
It exhibits good ductility, toughness, and impact resistance, with excellent machinability and pressure resistance.
 Used in various mechanical components, pumps, and as a substitute for cast steel.

 SFF 

Mechanical Properties Application
Offers optimal toughness and impact resistance, suitable for low-temperature applications.
 Used in low-temperature pumps, valves, clutches, etc.


The manufacturing process of high-grade castings with a monthly production capacity of up to 1000 tons includes molding, casting, and post-processing. Equipment includes medium-frequency induction furnaces, self-hardening furan molding lines, shot blasting machines, and eco-friendly recycling facilities.

Main Production Equipment

Equipment Name

Quantity

Dust collecting air pollution preventive

One set
Water cool type cupola (4 ton) One set
High frequency induction furnace (3 ton) 1500 kw
 Two sets
High frequency induction furnace (200 kg)  Two sets
Furan no-bake molding system (10 ton)  Two units
Furan no-bake molding system (20 ton)
 One unit
Roller sand blast apparatus  One unit
Blast with tumbling barrel
  One unit
Suspension Sandblasting Machine
  One unit

Molding Process

Our company uses the furan self-hardening molding method. Molding personnel prepare wooden molds and sand boxes according to the production schedule. 

The sand, mixed by the molding mixer, is sent out to begin the molding operation.

Mold Assembly

The completed sand mold and sand core are coated with a paint using either brushing or spraying methods. After drying, the mold assembly operation begins. 

Melting

Cast iron and other raw materials are sequentially added into the furnace. The carbon equivalent tester analyzes the carbon and silicon content and the CE value range. After adjusting the composition of the molten metal, it is poured into the casting basin to complete the melting operation.


Casting

The assembled molds are categorized by material and arranged in the casting area, where the casting operation begins sequentially.


Box Cleaning

After casting, the vibration machine is used to separate the castings from the sand box and sand, completing the box cleaning operation.

Post-processing

After removing the sprue, the castings that require stress relief are sent to the annealing furnace for stress relief annealing. The casting cleaning machine uses steel beads to remove sand from the surface, and then the burrs and unnecessary protrusions are ground off using a grinding wheel. 

Finally, after removing any remaining debris from the surface and inner holes, the casting is coated with anti-rust paint, completing the post-processing operation.

Inspection

Samples of test pieces and test bars are taken from each furnace batch for composition analysis and tensile strength tests using spectrometric analyzers and tensile testing machines, ensuring the quality of the castings.

退火爐

後處裡

除澆冒口後的鑄件【須作應力去除者送退火爐作應力退火】，以鑄件噴洗機利用鋼珠將附著在鑄件表面的砂去除後，以砂輪機將鑄件的毛邊及不要的凸出物磨平，最後將鑄件表面及內孔的附著物清除乾淨後噴上防銹漆，完成後處理作業。



洗砂打磨


噴防銹漆

檢驗

依每一爐次取樣的試片及試棒，由分光分析儀及拉力試驗機分別作成份分析和抗拉強度試驗等Mechanical Properties檢測，以確保鑄件品質。



從顧客開始 – 找到他們想要什麼並提供他們.

The inspection equipment includes a carbon equivalent measuring instrument for determining carbon and silicon content and CE value, general hardness testers for rough castings, tensile testers, and others to determine the mechanical properties of castings for furnace control. Additionally, a metallographic analyzer, spectrometer, and cast iron metallographic image analysis system are used to analyze the graphite distribution shape and graphite length of gray cast iron and the graphite form (I-VI) and size of ductile cast iron.

Inspection Equipment

Equipment Names

Quantity

Spectrometer

One set
Metallographic Microscope
 One unit
Cast Iron Image Analysis System
 One set
Carbon Equivalent Measuring Instrument
 One set
100 Ton Tensile Tester
 Two units
Brinell Hardness Tester (KING)
 One unit
Immersion Thermometer
 Two units


單獨的電子郵件地址用逗號區分.

 Submit

BACK