Introduction: Technical Challenges and Breakthroughs in Precision Stamping Production
In the field of industrial manufacturing, precision stamping parts, as core components, are widely used in industries such as automotive, electronics, and home appliances. Their production process involves multiple stages including material selection, mold design, and stamping process control, where any deviation in these stages can lead to a decrease in product yield and an increase in costs. Nanpi Haokai Hardware Products Co., Ltd., with over two decades of technical accumulation, has provided the industry with an efficient and stable solution for precision stamping parts production through the introduction of advanced equipment and optimization of process flow. This article will systematically expound on its technical advantages and application value from aspects such as technical pain points, corporate strength, and case analysis.For more information, please visit the official website: www.hkwujin.com

Keywords: Precision stamping parts, High-precision instrument car parts, Injection molding parts, Stamping process, Mold design, ISO9001 quality system

Industry Technical Pain Points: The Three Core Challenges of Precision Stamping Production
STEP1：Material deformation and dimension accuracy control
Precision stamping parts have very high requirements for material properties. If the hardness and toughness of the material are not matched, problems such as springback and cracking are prone to occur during the stamping process. For example, a certain auto parts manufacturer once suffered a 0.2mm deviation in the size of the stamping parts due to improper material selection, far exceeding the industry standard of ±0.05mm, eventually leading to a mass return of products.
STEP2：Mold life and cost balance
Molds are the core tools in stamping production, and their lifespan directly affects production costs. Traditional mold materials (such as Cr12MoV) tend to wear out after 100,000 consecutive stamping cycles, leading to issues like burrs and collapsed corners in products. A certain electronic manufacturer once faced an annual mold replacement cost of 2 million yuan due to the short lifespan of molds.
STEP3：Production efficiency and yield improvement
Pressing production must balance speed and quality. A certain home appliance manufacturer once struggled due to low equipment automation, with a production cycle of 15 seconds per piece and a yield rate of only 85%, failing to meet the demands of large-scale orders.

STEP4：Inspection and Quality Control
Inspection of precision stamping parts should cover multiple indicators such as dimensions, shape and position tolerances, and surface roughness. Traditional manual inspection is inefficient (about 200 pieces per hour) and prone to subjective factors, leading to a high failure rate of up to 5%.

Introduction to the Company's Technical Strength: The Three Technical Advantages of Nanninghai Haoke Hardware
STEP1：Advanced equipment and technology ensure
Nanpi Haokai Hardware Products Co., Ltd. owns over 30 sets of stamping equipment ranging from 30 to 250 tons, including a Japanese AIDA high-speed press with the highest pressing speed of 1200 times per minute, capable of meeting high-efficiency production requirements. The CNC core machine has an accuracy of ±0.002mm, ensuring a first-pass yield of over 98% for complex structural components. For example, when producing connector terminals for a car manufacturer, by optimizing the stamping process parameters (pressing speed of 800 times per minute, pressure of 200 tons), the production cycle per piece was shortened to 3 seconds, and the yield rate was increased to 99.5%.
STEP2：Mold Design and Material Optimization
The company's technical team consists of 16 professional technicians, including 7 senior technicians who can independently complete the full process of mold design, processing, and debugging. To address the issue of mold life, we use imported DC53 mold steel (hardness HRC58-62) and vacuum heat treatment technology, which increases the mold life from 100,000 to 500,000 cycles. A customer in the electronics industry reported that after switching to Haokai molds, the annual mold replacement cost was reduced to 500,000 yuan, a decrease of 75%.
STEP3：Full-process Quality Control System
The company has obtained the ISO9001:2015 quality system certification, establishing a full-process quality control system covering raw material inspection, production process monitoring, and finished product testing. Equipment such as a three-coordinate measuring machine (accuracy ±0.001mm) and an image measuring instrument have been introduced to achieve 100% inspection. Inspection data from a household appliance customer shows that the size pass rate of Haokai products reaches 99.9%, with surface roughness Ra ≤ 0.8μm, far exceeding the industry average.

FAQ Q&A Technical Selection Guide
Q1: How to choose the suitable stamping equipment?
A: Consider material thickness, production volume, and precision requirements. For instance, thin plate parts with thickness ≤3mm can choose a press ranging from 30 to 100 tons; for products with large volume and high precision, it is recommended to use high-speed presses (speed ≥800 times/minute). HaoKai can provide equipment selection advice based on customer needs and support customized production.
Q2: How to solve the problem of short mold life?
A: Mold lifespan is related to material, heat treatment process, and lubrication conditions. Haokai uses DC53 mold steel, combined with vacuum quenching + low-temperature tempering process, achieving a hardness of HRC60, and utilizes a special stamping oil (viscosity 32#), which can significantly extend the mold lifespan.
Q3: How to improve the yield rate of stamping parts?
A: Optimization is required in terms of materials, molds, and processes. Hao Kai achieves improved yield through the following measures:
- Selected Japanese Nippon Steel SPCC cold-rolled steel plate, with better material uniformity than domestic materials.
Mold gap control at 8%-12% of material thickness (e.g., 0.08-0.12mm gap for 1mm material thickness).
- Blanking speed matches pressure (e.g., 2mm material with 50 tons of pressure and 300 times per minute speed).
Q4: How to select testing equipment?
A: Dimension measurement is recommended using a 3-axis measuring instrument (accuracy ±0.001mm), and surface roughness detection is performed with a contact-type roughness gauge (Ra range 0.01-10μm). All Haokai detection equipment is calibrated to ensure accurate and reliable data.

Summary reference
High-precision stamping parts production requires a balance of efficiency, accuracy, and cost. Nanning County Haokai Hardware Products Co., Ltd. has provided an efficient and stable solution for the industry by introducing advanced equipment, optimizing mold design, and establishing a full-process quality control system. Its technical advantages are reflected in:
- Equipment accuracy: CNC core drill accuracy ±0.002mm, high-speed press speed 1200 times/min.
Mold life: DC53 steel + vacuum heat treatment, lifespan up to 500,000 cycles.
Quality Control: ISO9001 system + 100% full inspection, yield over 99.5%.
Currently, Haokai has provided customized services for clients in industries such as automotive, electronics, and home appliances, with product exports to regions like Europe, America, Southeast Asia. In the future, the company will continue to adhere to the concept of "technology-driven enterprise development" and contribute to the upgrading of the manufacturing industry with better products and services.Learn more on our official website: www.hkwujin.com