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Overview of the Hydraulic Press Machine Frame Project
This Hydraulic Press Machine Frame case study highlights how Vietnam Outsourcing (VNO) partnered with world-class manufacturers of hydraulic presses and automation systems to develop high-precision steel frames, beds, and crown weldments in Vietnam.
Our clients included two global leaders:
- A UK-based company with over 75 years of experience in hydraulic and electrical control presses.
- A European engineering firm specializing in servo-electric presses and hydroforming equipment.
Both sought a cost-efficient, reliable manufacturing base in Vietnam to strengthen their global supply chain. VNO connected them with a dynamic Hanoi-based supplier experienced in heavy metal fabrication. With over 8 years of expertise in CNC machining, welding, coating, and assembly, this supplier became the trusted production partner for large Hydraulic Press Machine Frames and related components.
Hydraulic Press Machine Frame Manufacturing Process
High-grade steel plates were sourced according to the client’s specifications to ensure strength and consistency.
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Steel blanks were cut and shaped into component parts using CNC cutting and milling equipment.
Each part was milled before welding to guarantee clean contact surfaces and accurate alignment.
Subcomponents were assembled and welded following detailed work instructions to maintain dimensional accuracy.
All oil tanks underwent internal inspections and surface cleaning before leak testing.
The assembled Hydraulic Press Machine Frame was precisely machined to meet the tolerance range defined in the engineering drawings.
Machined surfaces were deburred, smoothed, and inspected before moving to blasting and coating.
Sandblasting removed surface impurities, and industrial-grade paint was applied to ensure corrosion resistance.
Finally, each finished frame was carefully packed for sea transport and delivered on schedule.
III. Detail process
Challenges in Hydraulic Press Machine Frame Production
The products are hydraulic press frames, which are very heavy and require precise positioning. It is essential to thoroughly review the product requirements in the drawings and develop an accurate machining process. During the implementation, several issues and challenges may arise:
Machining processes
Oil Tank Leakage
Positional Deviation
Weld Appearance Defects
Machining processes
Challenges
Errors in sequencing or machining processes can lead to incorrect positioning of critical assembly points, affecting the product’s functionality for the customer.
Solution:
- Collaborate with the factory to thoroughly review and refine the entire machining process, ensuring precise execution before proceeding.
- Vietnam Outsourcing (VNO) will assist by reviewing challenging stages before implementation.
- Consult with the customer regarding the assembly process and provide repair suggestions.
- Plan and execute corrective actions to ensure product accuracy.
Oil Tank Leakage
Challenges
Incomplete removal of welding slag before leak testing, and the presence of holes or air bubbles in some weld points, resulting in undetected oil tank leakage.
Solution:
- Thoroughly inspect the appearance of welds, especially inside the oil tank.
- Consult the customer’s leak testing system and set up a leak testing unit at the factory.
- Pressure test at the customer’s site: 2 psi
- Pressure test at the factory: 40-50 psi
Positional Deviation
Cause:
Positional inaccuracies during machining result in measured values falling outside the tolerance range specified in the customer’s drawings.
Solution:
Consult with the customer regarding the impact of positional deviations on the assembly process to determine if the deviations are acceptable. Document the findings.
Verify the origin coordinate system according to the drawing requirements before machining to ensure the correct setup of the machining program. Recheck the positional coordinates before tapping
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Weld Appearance Defects
Challenges
Visual Defects, Weld Appearance Defects
Solution:
- Remove and clean all burrs and sharp edges.
- Thoroughly inspect all weld seams and appearances to ensure there are no missing welds or air holes. Refer to the customer’s welding standards.
- Implement a QC plan for each stage before proceeding to the next step.
Results and Project Outcome
