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ST Series Presses Transform Automotive Parts Stamping Efficiency & Precision

2026-05-13

1. Case Overview

A professional automotive parts manufacturer located in Guangdong, China, specializes in producing high-strength steel brackets for new energy vehicles and traditional automotive chassis. As a supplier to first-tier automotive brands, the manufacturer faces strict requirements for product precision, production efficiency, and cost control. In early 2024, the company decided to upgrade its production line by replacing old ordinary no-brand mechanical punch presses with Qiaosen ST Series presses, aiming to solve long-standing pain points in heavy-duty stamping operations.

Key Production Requirements:

Product: 2.0–3.0 mm high-strength steel brackets
Precision Requirement: Dimensional tolerance ≤±0.03 mm
Production Mode: Two-shift operation (12 hours per shift), mass production with progressive dies
Core Demands: Improve precision, reduce defect rate, increase output, and lower maintenance costs

2. Customer Pain Points Before Upgrade

Before adopting Qiaosen ST Series presses, the manufacturer used ordinary no-brand mechanical punch presses, which led to the following critical issues that restricted production development:

Poor Precision Stability: The fuselage rigidity was insufficient, resulting in obvious deflection under heavy load. The product dimensional tolerance often exceeded ±0.03 mm, leading to a high defect rate of 0.85%.
Low Production Efficiency: The fixed stamping curve of mechanical presses could not adapt to the forming needs of high-strength steel, resulting in slow stamping speed and a daily output of only 7,200 pieces per machine.
High Maintenance Costs: The equipment had frequent failures, and the mold wear was severe due to unstable operation, with an annual maintenance cost of 48,000 CNY and a mold life of only 95,000 pieces.
Poor Adaptability: The fixed stamping mode could not flexibly adjust to the forming process of high-strength steel, leading to occasional material cracking and further increasing production costs.

3. Qiaosen ST Series Solution

After in-depth communication and on-site investigation, Qiaosen Machinery provided a customized stamping solution based on the customer’s production needs, recommending 2 units of STC-160 (C-frame double crank mechanical press) and 2 units of STA-160sv (C-frame single crank servo press) to form a mixed production line. The solution fully leverages the advantages of different sub-models in the ST Series to achieve complementary performance.

3.1 Selected Equipment & Core Advantages

Equipment Model	Type	Nominal Pressure	Core Advantages for Customer Needs
STC-160	C-frame double crank mechanical	160 Ton	High rigidity, stable operation under heavy load, suitable for mass production of standard parts; slider parallelism ≤0.015 mm/300mm, ensuring precision
STA-160sv	C-frame single crank servo	160 Ton	9 programmable stamping curves, slow forming function to avoid high-strength steel cracking; repeat positioning accuracy ≤±0.003 mm, reducing defect rate

3.2 Supporting Services & Integration

On-site Installation & Debugging: Qiaosen dispatched professional technical engineers to the customer’s workshop for on-site installation and debugging, ensuring the smooth connection between the ST Series presses and the original progressive dies, servo feeders, and safety light curtains.
Operator Training: 3 rounds of professional training were conducted, covering equipment operation, parameter setting, daily maintenance, and fault handling, helping the customer’s operators master the use skills of the equipment quickly.
After-sales Support: Provided 1-year free warranty and lifelong remote technical support, with a 24-hour response time for after-sales problems, ensuring continuous and stable production.

4. Application Effect & Data Comparison

After 12 months of continuous two-shift operation, the Qiaosen ST Series presses have achieved remarkable results, fully solving the customer’s pain points and exceeding the expected upgrade goals. The specific data comparison between before and after the upgrade is as follows:

Evaluation Indicator	Before Upgrade (Ordinary No-Brand Mechanical Press)	After Upgrade (Qiaosen STC-160 + STA-160sv)	Improvement Range
Product Defect Rate	0.85%	≤0.03%	↓96.5%
Daily Output per Machine	7,200 pieces	11,800 pieces	↑64%
Annual Maintenance Cost (4 machines)	48,000 CNY	19,500 CNY	↓59%
Mold Life	95,000 pieces	320,000 pieces	↑237%
Investment Payback Period	—	9 months	Fast return on investment
Product Precision Compliance Rate	88%	100%	↑12%

5. Case Summary & Key Insights

This case fully verifies the core value of Qiaosen ST Series presses in solving the pain points of automotive parts stamping. For manufacturers engaged in heavy-duty, high-precision stamping of high-strength steel, the ST Series has obvious advantages in the following aspects:

Precision & Stability: The integral high-strength fuselage, 42CrMo crankshaft, and high-precision slider guide rail ensure stable operation under heavy load, effectively reducing product defect rate and improving precision compliance.
Efficiency & Flexibility: The combination of mechanical (STC) and servo (STA) models in the ST Series realizes complementary advantages—mechanical models meet mass production needs, while servo models adapt to complex forming processes, significantly improving production efficiency.
Cost Savings: The long service life of core components, low energy consumption, and extended mold life effectively reduce maintenance costs and production costs, shortening the investment payback period.
Customization & Adaptability: The full lineup of ST Series (25–315 tons, C-frame/H-frame, mechanical/servo) can be customized according to different production scenarios, providing one-stop stamping solutions for manufacturers.

For manufacturers in the transition from traditional mechanical stamping to high-precision, high-efficiency stamping, choosing a customized solution based on Qiaosen ST Series presses is an effective way to improve core competitiveness. Qiaosen ST Series has broad application prospects in automotive parts, new energy vehicle components, and heavy-duty hardware stamping fields.

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