Client: A well-known domestic photovoltaic equipment and semiconductor device manufacturer Application Equipment: Silicon Crystal Growth Furnace Core Product: High-Temperature High-Vacuum Stepper Motor I. Client Background and Industry Challenges As the photovoltaic industry continuously increases its requirements for silicon wafer conversion efficiency and yield, the technological threshold of its core process equipment—the silicon crystal growth furnace—is also rising. Our partner, a professional manufacturer in the photovoltaic and semiconductor equipment field, is committed to creating high-performance monocrystalline silicon growth equipment. During the growth process of silicon ingots, the furnace environment directly determines the purity and uniformity of the crystals. The client faces three core challenges: Extreme Environmental Requirements: The furnace must maintain a high vacuum of 10⁻⁵ Pa and a high temperature of 200℃. Conventional motors will experience outgassing, poor heat dissipation, or even failure under these conditions. Ultra-High Process Precision: After growth, the silicon ingots need to be cut into silicon wafers of uniform thickness. This requires extremely smooth and precise rotation and pulling movements during the growth process. Even slight vibrations in the motor can affect the thickness consistency of the final product. Stringent Structural Adaptation: The equipment's space and cleanliness requirements necessitate a fully stainless steel circular motor structure, combining corrosion resistance with ease of installation. II. Solution: In-Depth Customization and Extreme Verification Addressing the client's pain points, our company did not offer a simple replacement with a generic product. Instead, we initiated a dedicated cooperation program, conducting in-depth technical collaboration for nearly a year. Extreme Environmental Adaptation Solution Vacuum/Weather Resistance Design: For 10⁻⁵ Pa high vacuum environments, we employed low-outgassing materials and a special vacuum sealing process to eliminate internal contamination sources within the motor. Simultaneously, we optimized the thermal structure design to ensure the motor's magnets do not demagnetize and the windings do not burn out at 200℃. Full Stainless Steel Material: A fully enclosed stainless steel circular shell was custom-designed to meet the client's requirements, satisfying vacuum hygiene requirements and enhancing the overall corrosion resistance of the equipment. Precision Motion Control Solution For the combined motion requirements of silicon crystal rod pulling and rotation, we optimized the motor for low-speed pulsation. This ensures absolutely uniform heating of the silicon solution during prolonged, slow rotation. During the stretching stage, high-precision stepper control lays a solid mechanical foundation for achieving uniform thickness in subsequent silicon wafer cutting. III. Collaboration Results and Customer Value After nearly a year of comprehensive testing from the laboratory to the production line, our high-temperature, high-vacuum stepper motor perfectly matches the customer's needs in all aspects: Technical Compliance: Under the dual tests of 10⁻⁵ Pa vacuum and 200℃ high temperature, the motor operates continuously without failure, fully meeting the requirements of 24-hour uninterrupted production. Precision Guarantee: The high-precision operation of the motor directly translates into high-quality growth of silicon ingots, helping to improve the customer's product yield and ensuring the uniformity of silicon wafer thickness after cutting. Deep Trust: Thanks to the superior product quality and efficient collaboration between our teams, we have won high recognition from our customers. Currently, this model of motor has moved from trial use to mass production, with over 1000 units installed in customer equipment, becoming the core standard power unit for their silicon growth furnaces. IV. Conclusion This case study not only represents a successful validation of our company's products in the field of core photovoltaic equipment, but also serves as a model of technological integration and win-win cooperation between the two parties. In the future, we will continue to delve into technologies for driving special environments such as high temperature and high vacuum, providing stronger impetus for the localization and upgrading of photovoltaic and semiconductor equipment.

Project Background: To meet the needs of remote sensing satellite applications, a research institute commissioned our company (Zhonggu Weike) to conduct process research, precision machining, and assembly of high and low temperature motors—a key component in its Stirling and pulse tube refrigerator series. This series of refrigerators utilizes advanced technologies such as Oxford-type gap seals, leaf spring supports, and linear motor drives, possessing advantages such as large cooling capacity, fast start-up, high reliability, long lifespan, and low vibration. They are widely used in detectors, superconducting electronics, and space cryogenic storage. Project Challenges: The parts required extremely high machining precision and process control, and their structure was complex. High consistency and reliability of product performance needed to be ensured. The project delivery cycle was tight, posing a dual challenge to production management and technical capabilities. Completion Status: By optimizing the process route and strictly controlling quality, we overcame the technical difficulties and ultimately delivered the product on schedule and with high quality. The product fully met the user's design requirements and received high praise from the client.

Our client is a renowned domestic biotechnology company, an innovative technology-driven enterprise combining ultra-low temperature and automation technologies.  They specialize in providing automated and intelligent storage equipment and comprehensive solutions for biological cell samples in the -80℃ to -196℃ temperature range to users in the biomedical field worldwide. Technical Challenges in Low-Temperature Environments: In extreme low-temperature environments below -80℃, conventional motors face multiple challenges, including lubricant solidification, material embrittlement, and decreased insulation performance. This leads to difficulties in equipment startup, unstable operation, and frequent failures. This places extremely stringent requirements on the core driving components—the motors—in automated equipment operating in ultra-low temperature environments. Solution: Based on the client's specific needs, we provided them with ultra-low temperature stepper motors and ultra-low temperature servo motors, as follows: Stepper Motors: HS4248A / HS5776A (with brake), equipped with a braking device to ensure precise start-stop and positioning in low-temperature environments. Servo Motors: 100W / 400W / 750W (with brake), also integrated with a braking system for high-speed response and precise control. Market Validation: After long-term application and validation on multiple client devices, our ultra-low temperature motor series has demonstrated excellent low-temperature adaptability: It can still start normally and operate stably in a -196℃ liquid nitrogen environment. Precise braking control ensures the accuracy and safety of biological sample tube grasping and transfer. Long-life design reduces maintenance requirements and lowers client operating costs. Currently, our ultra-low temperature motor technology is in a leading position in China, overcoming key technical bottlenecks in the reliable operation of motors in low-temperature environments. The client's ultra-low temperature fully automated biological sample storage system and tube picking workstation have been successfully applied in numerous research institutions, hospitals, and biopharmaceutical companies domestically and internationally, and the overall performance of the equipment has received high market recognition.

Customer Background: A domestic technology company specializes in the development of communication and information products. Its business spans transmission equipment, multimedia devices, system integration engineering, and terminal equipment, leveraging deep technical R&D and product integration capabilities. Application Scenario: Primarily used in high-low temperature cycle testing equipment for mobile phone chips, where chips are tested under extreme temperature conditions to identify and automatically screen out defective units. Core Requirements: The equipment must operate stably within a harsh temperature range of -40°C to 150°C, while adhering to strict spatial and weight constraints to ensure efficient and precise testing. Project Challenges: Extreme Temperature Environment: The wide working temperature range (-40°C to 150°C) imposes high demands on motor materials and performance. Space and Weight Limitations: The compact equipment structure requires the motor to be lightweight while meeting torque output requirements. Environmental Durability: The equipment operates long-term in high-temperature and high-humidity conditions, requiring the motor to possess rust resistance and long-term reliability. Solution: To address the customer's needs, we customized the HS5756 stepping motor-gear reducer integrated unit, implementing the following measures: Integrated Design: The motor and gear reducer are highly integrated, saving installation space and simplifying the structure. Lightweight Optimization: The motor is designed to reduce weight while ensuring torque output meets testing requirements, adapting to the equipment's weight constraints. Material and Process Upgrades: Special rust-proof treatments are applied to key motor components, enhancing long-term operational reliability in high-temperature and high-humidity environments. Results and Value: The HS5756 High and Low Temperature stepping motor has been successfully applied in the customer's high-low temperature chip testing equipment. It ensures stable operation and precise control under extreme temperatures, enabling efficient chip testing and automatic screening of defective units. This has significantly improved testing efficiency and the overall reliability of the equipment.