In recent years, the trend of green living is no longer a strange trend for many people, even spreading vigorously in communities of all ages and all generations in all countries. Since then, gradually, “green living” is no longer just a lifestyle, green living has been introduced and applied in many different fields towards sustainability, bringing many positive effects to the environment. as well as climate.

Understanding and seeing the positive signals that this trend has affected human, environmental, and climate factors, Vietnam Outsourcing has continuously researched with the desire to develop a project combining the mechanical engineering industry. Gas and green living trends into many specialized fields, thereby implementing green projects at construction sites.

Green Urban Life is an interdisciplinary group covering the fields of architecture, art, botany, and technology, planning and implementing green projects on buildings. According to research on many ages, especially those trying their best because of the pressures of life, young residents, the fast pace of life in the technology era has eroded a lot both physically and mentally. Physically and mentally.

In the hustle and bustle of life with a lot of pressure and a dense environment of dust and noise, relaxing moments for yourself and your family has become a luxury concept. Therefore, Green Urban Life helps the projects, and we become green spaces capable of balancing “spirit – health – mind.”

As mentioned above, the Green Urban Life project that VNO wants to implement is a combination of good work between different fields and green trends, bringing into the critical industry we are assigned. Pursuing: mechanical processing industry. So, what green projects do we want to get to our customers?

• Stainless steel – sheet metal forming, including:
• Metal stamping for large spheres D200mm & 300mm. Laser cutting, welding, and assembly.
• Automated watering solutions

Vietnam Outsourcing (VNO) has assisted with design verification, pre-production sampling, mass production, order fulfillment, and on-time delivery.

The processing process in the case study Green Urban Life of VNO

Step 1: Design for Tooling & Fixture

In this step, the tool development processes will be automated, including part design, tool assembly layout, detailed design planning and tool validation using design tools. Equipped with advanced and modern functions. With step-by-step instructions and the ability to combine part designs, you can work with even the most challenging tool and fixture designs.

Step 2: Deep-drawn metal stamping & Fine Blanking

At this step, VNO will coordinate with Vietnamese suppliers to implement the deep-drawn metal stamping and exemplary blanking process.

Fine Blanking is a sheet stamping technology classified as a near-net shape with many advantages.

In this stamping process, it is much easier to process holes more minor than the exact material thickness, the stamping product has high quality, precision, and absolute flatness. Besides, unlike traditional stamping, the edges of the products are not cracked and do not taper, so the size is highly accurate for both small or thick and large materials. Fine Blanking stamping products are always high precision and ready to use with precise, perfect and smooth cutting surfaces.

Regarding deep-drawn metal stamping, this process can machine delicate parts from simple to complex, which other methods cannot do. High-precision machined parts, glossy surface. The stamping process almost only produces blanks like forging and casting if the initial billet is calculated correctly. Parts after processing can be used immediately or only go through a few small stages to be usable. Automation can be implemented to reduce costs.

Step 3: Surface finish by the polishing method

At this step, the metal products are polished to increase the finish and aesthetics, thereby increasing the product’s value. Metal polishing is seen as an essential ancillary industry to any manufacturing activity. Products created after the metal polishing process achieve high aesthetics, no defects, improved cost, and competitiveness with similar products.

2. Rare cases in our machining process and solutions

Deformation of metal

Deformation errors in the stamping process are common and require effective handling by experienced engineers to ensure product quality according to customer requirements.

The stress sign from the forming process depends on the stamping process because it is stainless steel, so the elongation capacity of stainless steel is small, the elastic modulus E is more significant, and the hardness index is higher. Cracking of SS material sometimes occurs during tensile, austenitic stainless steel has a high cold hardening index (0.34% for SS). Austenitic stainless steels are super stable and will undergo a transformation during deformation, thus creating a martensitic phase. The martensite stage is brittle and prone to cracking.

During plastic deformation, with increasing elongation, martensitic content and residual stress will increase. The relationship between residual stress and martensite content is that the higher the induced martensite phase content, the greater the residual stress and the easier it is to crack during processing.

Scratching condition

Standardizing engineering practices to significantly reduce product scratches is a must for machine operators in our factory.

Select the most suitable stainless steel material: in austenitic stainless steel, the commonly used materials are 1Cr18Ni9Ti and 0Cr18Ni9Ti. In the tensile process, 1Cr18Ni9Ti is more stable than 0Cr18Ni9Ti and has good crack resistance, or the SUS304Cu grade with 0.7-3.5% Copper content will assist in the forming/stamping process.

Stress marks

Stamping stress fracture is a principled phenomenon; we can handle it with the 15 years of experience of our highly qualified stamping engineers.

Use lubricating dry coating material on the mold surface (main components include a cotton nitride, oleic alkyd resin, plasticizer, pressure-resistant material, etc.) to reduce the frictional resistance between the material and the mold surface. The forming process makes the material flow more easily from the deformation zone to the transition zone.

The dry film of the lubricant can separate the mold from the blank material, thus preventing the surface from scratching the parts and the mold’s links, thereby improving the surface quality and productivity of the parts. good part.

Summary

With the desire to spread positivity in each green project that we have cooperated on and implemented, once again, VNO wishes to expand the cooperation further, thereby being able to deliver values in the future, meticulously crafted plans. We always want to introduce our ideas and implement green projects, bringing a green urban life throughout the Asian market. Each implemented project is expected to possess a harmonious space that helps bring not only creative energy but also the experience of true life.

And the capital Hanoi – Vietnam, has been an extremely good starting point.