1、 Material preparation and pretreatment

Wafer thinning control

The original thickness of a 12 inch wafer is 775 μ m, and thinning requires the use of temporary bonding/debonding technology to achieve ultra-thin processing below 20 μ m, with thickness variation controlled within<1 μ m.

SiC substrate requirements: Si surface roughness Ra ≤ 0.3nm, C surface Ra ≤ 0.5nm, using a combination of mechanical initial polishing and chemical mechanical precision polishing process.

Material stability optimization

Perform aging treatment (150 ℃ × 4h) on easily deformable materials such as stainless steel to release internal stress.

The processing environment temperature is stable at 23 ± 2 ℃, and the temperature fluctuation in the constant temperature chamber is ≤ 1 ℃.

2、 Core processing technology

1. Ultra precision surface treatment

Chemical mechanical polishing (CMP):

Through the synergistic effect of chemical corrosion (customized polishing solution) and mechanical grinding (nano SiO ₂/CeO ₂ abrasive particles), atomic level flatness with surface roughness<0.1nm is achieved.

Polishing parameter control: pressure 0.5-7psi, speed 30-120rpm, polishing solution pH 9-11 (adjusted according to material).

Laser assisted processing:

Difficult to cut materials such as titanium alloys are locally preheated using a 500W laser, reducing cutting force by 40% and improving roughness by 50%.

3、 Thermal deformation and stress control

Thermal management technology

Using micro lubrication (MQL) technology, the cutting temperature rise is controlled within 15 ℃.

Machine tool thermal deformation dynamic compensation system, with an accuracy of ± 0.003mm/m.

Stress relief process

Optimize cutting parameters: reduce the feed rate to 0.05mm/r and gradually process in three stages: coarse, medium, and fine (with a margin of 0.2mm → 0.05mm → 0.01mm).

Pulse cooling technology: water pressure of 20MPa, interval of 0.5s, to reduce thermal stress accumulation.

4、 Full process accuracy verification

1. Online monitoring system

Multi sensor fusion: Laser displacement sensor (± 1 μ m) combined with vibration sensor (10kHz sampling rate), real-time correction of machining path.

Tool status monitoring: Automatically adjust parameters when acoustic emission signal>5dB to prevent chip buildup.

2. Ultimate testing standards

Surface quality: roughness Ra<0.1nm after CMP (verified by atomic force microscopy).

Dimensional tolerance: Critical dimension CPK ≥ 1.67, three-dimensional sampling ≥ 12 points/feature.

Functional verification:

The moving parts have passed 10 ⁵ fatigue tests (120% rated load).

The helium leak detection rate of the seal is ≤ 1 × 10 ⁻⁶ mbar · L/s.

5、 Cutting edge technology in the industry

Composite machining center: The turning and milling composite equipment integrates RTCP function, reducing clamping errors and achieving a position accuracy of ± 0.003mm.

Intelligent closed-loop control: Real time feedback of online detection data to the processing system, dynamically correcting process parameters.

Sumitech establishes a process window database and determines the optimal parameter combination through DOE experiments; Industrial CT scanning (resolution ≤ 5 μ m) is needed to verify internal defects in the medical/aviation field. For cutting-edge applications such as 3D packaging, it is necessary to simultaneously optimize the temporary bonding strength and the stability of ultra-thin wafer transfer.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

1. Optimization of cutting parameters

Turning/milling:

The precision turning accuracy can reach IT5 level (tolerance ≤ 0.01mm), and it is necessary to control the spindle radial runout ≤ 0.005mm and feed rate ≤ 0.05mm/r.

Stainless steel precision machining needs to be divided into three processes: coarse, medium, and fine. The residual gradient should be controlled at 0.2mm → 0.05mm → 0.01mm to avoid rough cutting marks.

Grinding:

The linear speed of the grinding wheel is ≥ 35m/s, the feed rate of the workpiece is ≤ 0.5m/min, and the surface roughness can reach Ra 0.01 μ m (such as in bearing raceway machining). ‌

二、 Full process accuracy verification system

1. Online monitoring technology

Multi sensor fusion: Integrating laser displacement sensors (accuracy ± 1 μ m) and vibration sensors (sampling rate 10kHz) in the machine measurement system to reconstruct the machining path in real time.

Tool status monitoring: Detecting chip deposits through acoustic emission signals, and automatically adjusting cutting parameters when the signal amplitude is greater than 5dB.

2. Ultimate testing standards

Dimensional tolerance: Critical dimension CPK ≥ 1.67, three coordinate measurement sampling points ≥ 12 points/feature (ambient temperature 23 ± 1 ℃).

Functional verification:

Moving parts need to pass 10 ⁵ fatigue tests (with a load of 120% of the rated value)

Sealing helium leak detection rate ≤ 1 × 10 ⁻⁶ mbar · L/s

三、 Frontier precision improvement technology

Laser assisted processing

When processing difficult to cut materials (such as titanium alloys), a 500W laser is used for local preheating (temperature gradient ≤ 100 ℃/mm) to reduce cutting force by 40% and improve surface roughness by 50%.

Composite machining center

The car milling composite equipment integrates RTCP (Rotary Tool Center Point Control) function, reducing repeated clamping errors and achieving a position accuracy of ± 0.003mm.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

Intelligent CNC cluster: equipped with 20 Japanese Mazak five axis linkage CNC machines, with a machining accuracy of ± 0.005mm.

Special process capability: Possess special processes such as deep hole drilling (L/D ratio 20:1) and mirror polishing (Ra0.2 μ m).

Testing system: Dual quality inspection guarantee of three coordinate measuring instrument and spectral analyzer.

2、 Material handling expertise:

Covering 12 materials including 304/316 stainless steel and alloy steel.

The independent heat treatment workshop can achieve modification treatments such as quenching (HRC58-62) and nitriding.

Experience in large-scale processing of over 5000 tons of steel per year.

3、 Customized services:

Support the full process service from drawing design to sample trial production and mass production.

48 hour rapid sampling response mechanism.

The flexible production line meets the different batch requirements of 50-50000 pieces.

4、 Cost control plan:

• Adopting ERP system to achieve a raw material utilization rate of 92%+• Powerful supply chain collaboration to reduce logistics costs by 15% • Waste recycling and regeneration system to create secondary value.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

1. Precision manufacturing benchmark enterprise: With 15 years of focus on aluminum alloy component processing in the aviation/automotive/electronic fields, we have introduced German CNC five axis machining centers (accuracy ± 0.01mm). Passed AS9100D aerospace quality management system certification.

2. Advantages of full process technology: raw material testing, CNC precision cutting, surface anodizing treatment, 3D laser detection.

二、 Core competitive advantage

1. Cost control system: adopting AI scheduling system to reduce energy consumption by 15%, and strategically cooperating with aluminum suppliers to ensure stable raw material prices.

2. Special technological breakthroughs: thin-walled processing (with a minimum thickness of 0.3mm without deformation), and overall processing of large components (using gantry equipment with a maximum length of 8 meters).

三、 Customer value delivery: 48 hour rapid prototyping response, providing DFM (Design for Manufacturing) optimization services, and a full lifecycle quality traceability system.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

High strength and low density: twice the hardness of steel but 40% lighter in weight, requiring high-power equipment

Poor thermal conductivity: The cutting area is prone to accumulating high temperatures (up to 1000 ℃) and requires forced cooling

High chemical activity: prone to chemical reactions with tool coatings above 600 ℃

Key process requirements

Tool selection: Recommended diamond/cubic boron nitride coating, front angle ≤ 15 °

Parameter optimization: cutting speed controlled at 30-60m/min, feed rate 0.1mm/r

Cooling plan: Water based emulsion must be used with a flow rate of ≥ 20L/min

Processing precautions:

safety protection

① Dust treatment: equipped with TIG grade dust removal equipment (particle size ≤ 0.1 μ m filter)

② Fire prevention measures: It is strictly prohibited to use chloride cutting fluid and magnesium sand fire extinguishers should be prepared

quality control

Deformation control: using layered milling, single-layer cutting depth ≤ 0.5mm

Surface treatment: Electrolytic polishing can reduce roughness to Ra0.2 μ m

Sumitech, as a precision parts processing company, focuses on providing precision parts processing, five axis linkage parts processing, complex parts processing, Invar alloy parts processing, titanium alloy parts processing, engineering plastic parts processing, stainless steel parts processing, and non-standard parts processing for medical, semiconductor, aviation, energy, automotive, and communication fields. We also offer one-stop modular assembly services and professional 3D inspection services to the outside world.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

2. The automotive manufacturing industry is also an area where our CNC precision machining excels. For example, the precision of components such as crankshafts, pistons, and cylinder blocks inside automobile engines directly affects the performance and reliability of the engine. We can ensure high precision machining of these components during the precision machining process, improving the power output and fuel economy of the engine.

3. The medical device industry has extremely high requirements for product accuracy and surface quality. We have developed a comprehensive CNC precision machining process to provide strong support for the medical industry. We have rich processing experience and high-precision, high quality manufacturing processes for surgical instruments, implantable medical devices, and medical equipment casings.

4. In the field of electronic devices, CNC precision machining has made the internal structure of electronic products such as smartphones, computers, and tablets increasingly complex, and the components are also becoming more precise. We can manufacture small and precise components such as circuit boards, connectors, heat sinks, etc.

In addition to the above mentioned fields, it is also involved in military industry, energy, various tools and model manufacturing. Sumitech has over 10 years of rich experience in the CNC precision machining industry, with extensive practical experience in various fields of raw materials, various brands of production equipment, various types of testing equipment, self made fixtures and jigs, outsourced surface treatment, outsourced heat treatment, outsourced cryogenic treatment, assembly, and other aspects of machining. And each has valuable work experience in different industries. Have good mechanical drawing skills and proficient in designing software 3D/2D (UG/CATIA/PROE and AUTO CAD). Has strong ability to solve on-site technical problems.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

Stainless steel series (316/316L/316F/303/304/420, etc.)
Aluminum alloy series (AL6061/5083/7075/2A12, etc.)
Alloy series (Invar alloy, cobalt nickel alloy, 718, etc.)
Engineering plastics series (PEEK/POM/ABS/PTFE, etc.)
Fiberglass series (G10/FR4, etc.)
Carbon fiber series
Copper series (C1100/black copper, brass, tin bronze, etc.)

The above materials are all proficient and experienced parts of Sumitech factory, which can select different cutting tools and create different processing programs according to different materials. The main processing objects are box type parts, complex surfaces, irregular parts, and composite plate type parts.

1. Box part
   Box part generally have porous systems, internal cavities, and parts with certain length, width, and height ratios. This type of component is mainly used in industries such as machine tools, automobiles, and aircraft manufacturing. Box type parts generally require multi station drilling and flat machining, with high tolerance requirements, especially for form and position tolerances, which are relatively strict. We usually complete the production of finished products through milling, drilling, expanding, boring, reaming, spot welding, tapping, and other processes.

2. Complex geometric shape parts
   Complex surfaces play a very important role in mechanical manufacturing, especially in the aerospace industry. Sumitech factory has high-end imported production equipment: German original imported Demage five axis CNC machining center, Siemens operating system, stroke: 650 (X) * 500 (Y) * 500 (Z), speed: 18000rpm, machine tool tolerance: plus or minus 0.002mm. It is suitable for processing polyhedral parts with high precision requirements.

3. Alien parts
Alien parts are irregular components that require mixed processing of points, lines, and surfaces at multiple workstations. Reasonable process measures should be taken during processing, such as clamping once or twice. Sumitech factory’s multi axis machining center has the characteristic of multiple workstations and can complete multiple and all processes.

4.Disk, sleeve, and composite plate parts
For disc-shaped parts with keyway or radial holes or distributed hole systems, curved disk sleeves or shaft zeros, such as flange shaft sleeves, keyway or square head shaft parts, and porous machining plates, vertical machining centers should be selected. For disc-shaped parts with distributed holes and curved surfaces on various motor end faces, horizontal machining centers with radial holes should be selected.

If you have any parts that need to be processed, please feel free to email us for consultation. We will provide processing solutions and process explanations.

Firstly, design planning is the starting point for automated precision machining of parts. Engineers use computer-aided design (CAD) software to create precise part drawings that detail the dimensions, shape, materials, and other key elements of the parts, providing clear guidance for subsequent machining steps.

Next, the material preparation stage involves selecting suitable raw materials according to design requirements and conducting necessary preprocessing such as cutting, polishing, etc. to ensure that the materials meet processing requirements.

Then, enter the precision machining stage. At this stage, CNC machines are usually used for cutting operations, including turning, milling, drilling, etc., to achieve precision machining of parts. The operator will program the machine tool based on the part drawings to ensure precise cutting paths and machining parameters. The high precision and automation characteristics of CNC machine tools enable efficient removal of materials and formation of the final part shape during this stage.

After processing, inspection and quality control are crucial. This step includes strict testing of multiple indicators such as size, shape, and surface roughness of the parts. Only parts that meet the requirements can pass the inspection. For non-conforming parts, they need to be repaired or scrapped to ensure the quality and reliability of the final product.

Next is the surface treatment stage. In order to improve the corrosion resistance and aesthetics of some parts, surface treatment processes such as grinding, spraying, and electroplating are required. These processes can improve the surface quality of parts, extend their service life, and meet specific application requirements.

Finally, according to actual needs, assemble and debug the processed parts. This step requires ensuring the precision and stability of the fit between the parts to meet the overall functional requirements of the product. During the assembly process, specialized assembly tools and equipment may need to be used, and necessary debugging and testing may be carried out to ensure the normal operation of the product.

Firstly, from a technical perspective, the core of precision machining of semiconductor components lies in achieving size control and surface quality optimization at the micrometer or even nanometer level. This requires strict control of parameters such as temperature, pressure, and cutting force during the machining process to ensure that the machining accuracy and surface roughness meet the design requirements. At the same time, semiconductor materials such as silicon and gallium arsenide have unique physical and chemical properties, which also impose strict requirements on processing tools, cooling fluids, and processing environments.

Secondly, the precision machining process of semiconductor components is complex and intricate. Usually includes the following key steps: design preparation, which involves 3D modeling and simulation analysis based on product requirements to determine the size, shape, etc. of the parts; Next is the preparation of raw materials, such as heating and separating silica sand to obtain high-purity silicon materials; Then there are steps such as casting, cutting, and polishing to obtain finished wafers with a clean surface; Afterwards, oxidation and other treatments are required to form a protective film on the surface of the wafer.

In terms of key processing technologies, precision five axis machining technology is an important means of achieving high-precision machining of semiconductor components. This technology can achieve high-precision machining of complex curved parts through five axis linkage, meeting the stringent precision requirements of semiconductor components. At the same time, precision five axis machining technology can also improve machining efficiency, achieve one-time clamping and multi-faceted machining, and reduce the number of clamping times and processing time during the machining process.