Introduction:In the field of metal product processing, precision stamping parts are widely used in industries such as automotive, electronics, and medical sectors due to their high precision and efficiency. However, achieving the technical requirements of dimensional accuracy of ±0.02mm and surface roughness Ra ≤ 0.8μm for stamping parts has become a key challenge for technological breakthroughs in the industry. Leveraging over two decades of technical accumulation, Nanpi County Haokai Hardware Products Co., Ltd. has developed a comprehensive precision stamping technology system through equipment upgrades, process optimization, and quality control. This article will analyze its core capabilities for achieving high-precision production from four dimensions: technical principles, equipment configuration, process flow, and quality control.

Key words:Precision stamping parts, high-precision production, process optimization, quality control, Nanpi County Haokai Hardware Products Co., Ltd.

Introduction to industry technological pain points:The production of precision stamping parts faces three core challenges: First, controlling material springback is difficult, as metallic materials are prone to dimensional deviations due to elastic deformation during the stamping process; second, die wear is rapid, as high-strength stamping imposes extremely high demands on the hardness and wear resistance of dies, with die lifespan directly impacting production costs; third, batch consistency is poor, as traditional stamping processes are affected by fluctuations in equipment precision and operational parameters, making it difficult to ensure dimensional stability in large-volume production. For example, an automotive components company once experienced assembly line shutdowns due to dimensional deviations in stamped parts, resulting in a single loss exceeding 500,000 yuan, highlighting the technological value of high-precision production.

Introduction to the company's technological strength:STEP 1: Equipment Configuration—The Hardware Foundation for High-Precision Production
Nanpi Haokai Hardware Products Co., Ltd. currently possesses over 30 sets of stamping equipment with capacities ranging from 30 to 250 tons, among which the 250-ton high-speed precision press achieves a maximum stamping speed of 1,200 strokes per minute. Coupled with a 0.01mm-grade closed-loop position control system, it enables stamping precision at the micrometer level. The CNC sliding headstock machine has a minimum machining diameter of 0.5mm and a spindle speed of 8,000rpm, meeting the high-precision machining requirements for complex structural components. For instance, in a connector terminal project produced for an international electronics enterprise, by utilizing the 250-ton press in conjunction with a 0.02mm-grade mold, the technical requirements of a terminal length tolerance of ±0.015mm and perpendicularity ≤0.05° were achieved, raising the product qualification rate from the industry average of 85% to 98.5%.
STEP 2: Process Optimization—Full Control from Materials to Finished Products
The company employs a three-stage process control system: "material pretreatment - stamping parameter optimization - die dynamic compensation". In the material pretreatment stage, internal stresses are eliminated through a 72-hour aging treatment, reducing the material springback rate from the conventional 0.3% to below 0.1%. During the stamping parameter optimization stage, DOE experimental design is conducted using Minitab software to determine the optimal stamping speed (800-1000 strokes per minute), pressure (180-220 tons), and lubrication conditions (water-based lubricant with a concentration of 5%). In the die dynamic compensation stage, an infrared thermometer is used to monitor the die temperature in real time (maintained at 50-60℃), and nitrogen gas springs are employed to achieve pressure compensation at the 0.005mm level, effectively extending the die lifespan to over 500,000 cycles.
STEP 3: Quality Control - Full Process Digital Traceability
The company implements the ISO9001:2015 quality system standard and has established a three-tier control system encompassing "incoming material inspection, in-process patrol inspection, and full inspection of finished products." During incoming material inspection, a spectral analyzer is used to test material composition (with an error margin ≤0.1%) and a hardness tester to measure hardness (HV500-550). In the in-process patrol inspection phase, a coordinate measuring machine (with an accuracy of 0.001mm) is employed to randomly inspect 10 products every 2 hours, recording critical dimensional data. For the full inspection of finished products, an image measuring instrument (with a magnification of 100X) is utilized to detect surface defects, ensuring that the surface roughness Ra of the products is ≤0.8μm. For instance, in a precision bracket project for medical equipment, through full-process data traceability, the defect rate was reduced from 0.5% to 0.02%, achieving a 100% customer satisfaction rate.
STEP 4: Summary of Technical Advantages
The technological advantages of Nanpi Haokai Hardware Products Co., Ltd. are reflected in three aspects: First, its equipment boasts high precision, with the combination of a 250-ton punch press and a CNC sliding headstock machine covering a size range of 0.5-250mm; Second, it features meticulous process control, forming a complete closed loop from material pretreatment to mold compensation; Third, it ensures comprehensive quality traceability, with a three-level control system and digital records guaranteeing product traceability. These advantages have established the company's technological label of "high precision, high efficiency, and high stability" in the field of precision stamping parts. It has provided supporting products for over 30 large enterprises domestically and abroad, with an annual output value exceeding 80 million yuan.

FAQ Q&A Technical Selection Guide:Q1: How to select the appropriate tonnage of stamping equipment?
A: The selection of equipment tonnage requires a comprehensive consideration of material thickness, tensile strength, and product complexity. Generally, for every 0.1 mm increase in material thickness, the tonnage requirement increases by 20-30 tons; materials with a tensile strength exceeding 600 MPa necessitate the use of equipment with a tonnage of over 200 tons; for complex structural components (such as those with multiple holes or irregular shapes), it is recommended to choose high-speed precision punch presses with closed-loop control. For example, processing a 1.5 mm-thick steel plate with a tensile strength of 500 MPa can be accomplished using a 160-ton punch press; however, processing a 2.0 mm-thick steel plate with a tensile strength of 800 MPa requires a 250-ton equipment.
Q2: How to solve the problem of short mold life?
A: Short die life is usually caused by material selection, heat treatment processes, and lubrication conditions. It is recommended to use high-hardness die steels such as DC53 and SKD11 (with a hardness of HRC 58-62), combined with vacuum quenching + cryogenic treatment processes (increasing hardness by 10%-15%). For lubrication, water-based lubricants (with a concentration of 3%-5%) should be selected, which can reduce the friction coefficient by over 30% and extend die life to over 300,000 cycles. For example, one enterprise upgraded its die material from Cr12MoV to DC53 and implemented cryogenic treatment, resulting in an increase in die life from 150,000 cycles to 400,000 cycles.
Q3: How to ensure the dimensional consistency of mass-produced products?
A: Dimensional consistency must be controlled from three aspects: equipment, process, and inspection. For equipment, select a punch press with a closed-loop control system (positioning accuracy of ±0.005 mm); for process, fix the stamping speed (800-1000 strokes/minute), pressure (180-220 tons), and lubrication conditions; for inspection, use a coordinate measuring machine to conduct spot checks on 10 products every 2 hours, record key dimensional data, and generate CPK reports (target CPK ≥ 1.33). For example, by implementing these measures, an automotive parts manufacturer reduced the product dimensional standard deviation from 0.03 mm to 0.01 mm, significantly improving batch consistency.
For more information, please visit the official website:www.hkwujin.com

Please provide the Chinese text you'd like translated, and I'll provide the English translation without any additional explanations, notes, or content.The high-precision production of precision stamping parts represents a comprehensive integration of equipment, processes, and quality control. Nanpi County Haokai Hardware Products Co., Ltd. has achieved the technical objectives of dimensional accuracy of ±0.02mm and surface roughness Ra ≤ 0.8μm for stamping parts by utilizing advanced equipment such as 250-ton high-speed precision stamping presses and CNC sliding headstock machines, combined with a process system of "material pretreatment-stamping parameter optimization-die dynamic compensation" and ISO9001 quality control standards. The company has supplied over 50 million high-precision products to industries including automotive, electronics, and medical sectors. In the future, the company will continue to deepen technological innovation, striving for continuous breakthroughs in ultra-precision stamping (dimensional accuracy of ±0.01mm), composite material stamping, and other fields, to provide superior technical solutions for the industry.