CNC Machining Services in Vietnam

CNC Machining Services in Vietnam: Overview, Technology and Manufacturing.

Overview

CNC machine was born as a major turning point of scientific and technological development in manufacturing. People can use CNC machines to process different types of products including wood, stone, and metal. CNC with milling or turning services in Vietnam have revolutionized the international market with their CNC machining capabilities. With over $2 trillion in production, Vietnam becoming the leading country in the world in the manufacturing output chart.

Many companies outsource precision plastic and metal products with the best possible quality in Vietnam. They provided well-equipped facilities, the best machining methods, and qualified engineers.

Which CNC Machining Services are Vietnamese Companies Provide? 

There are two main services which most Vietnamese companies supported nowadays:

CNC Milling

CNC milling is a subtractive process using axis milling machines with various of cutting tools. After that, materials are removed from solid plastic and metal blocks into final parts with different geometries as designed. The number of axis can range from 2 to 4 axis milling.

CNC Turning

CNC turning can creating round components, such as shafts and worms. By combining CNC turning with live tooling, finished products can also added milled geometries. This makes CNC turning a versatile option for manufacturing a wide range of parts in different materials, plastic and metal bars or tubes, for example.

Besides, there are few more different types of CNC machining services in Vietnam:

Lathes

Pieces are cut in a circular direction with indexable tools in lathe machines. Thanks to CNC technology, the cuts made by lathes are carried out with precision and high velocity. 

CNC lathes can complete complex designs in products, which is impossible on manually run versions of the machine. The control functions of CNC-run mills and lathes might seem similar. However, lathes can be directed by G-code or unique code with CNC mills, while most CNC lathes consist of two axes X & Z.

Plasma Cutters

The plasma cutter technique uses a plasma torch to cut materials such as metal. In this process, plasma is generated through a combination of compressed-air gas and electrical arcs in order to produce speed and heat strong enough to cut metal.

Electric Discharge Machines

Electric-discharge machining (EDM), also known as spark machining, spark eroding, die sinking, wire burning or wire erosion, is a metal fabrication process whereby a desired shape is obtained by using electrical discharges (sparks). 

By closing the gap between the electrodes, the electric field will become more intense, and stronger than the dielectric. This makes it possible for a current to pass between the two electrodes. Accordingly, portions of a workpiece are removed by each electrode. 

Subtypes of EDM include:

• Wire EDM: Wire EDM uses spark erosion to remove portions from an electronically conductive material.
• Sinker EDM: Sinker EDM utilizes an electrode and workpiece soaked in dielectric fluid for the purpose of piece formation.

In a procedure known as flushing, debris from each finished workpiece is carried away by a liquid dielectric, which appears once the current between the two electrodes has stopped and is meant to eliminate any further electric charges.

CNC services Water Jet Cutters In Vietnam

In CNC machining, granite and metal need specific tools called water jets to cut. Basically, water jets run by high-pressure applications of water, in some cases, the water is mixed with sand or some other strong abrasive substance. 

Because of their cooler nature, several sectors such as the aerospace and mining industries depend on water jets for carving and cutting, among other functions. This machine is suitable for materials that are unable to stand intensive heat in processes of other CNC machines. 

Technology

CNC machining becomes one of the most prominent technologies in the world. However, the Vietnamese domestic mechanical engineering industry is developing at a slow rate, local manufacturers are as yet incapable to produce complex equipment such as CNC precision machinery. Which means that Vietnam currently has to import more than 70% of its machine tools. 

In Vietnam, imported machines have 3 main groups of machines:

1. CNC machines from South Korea, China, and Taiwan such as Doosan (Korea), Hyundai (South Korea), Daewoo (South Korea).

Geographically, import costs from China and Taiwan will be less expensive than elsewhere. Moreover, their machinery is flexible and customized, they are two of the largest machine tool suppliers in this field. 

1. CNC machines of developed countries: Japan, Germany, US with well-known brands like Komatsu (Japan), Hitachi (Japan), Kobelco (Japan), and Caterpillar (US).

Despite the fact that these countries’ machines have a higher price, they maintain a competitive edge due to their quality and reliability.

1. When it comes to domestic manufacturing machines, there are 2 common choices here:

3.1. Buying used “old machines”.

3.2. Manufacturing components of machine structure and assembly in Vietnam.

While the Vietnamese government plans to develop domestic machine and plant engineering, Vietnam can produce relatively basic equipment. Therefore, the industrialization of Vietnam is highly dependent on machine tool imports.

Manufacturing CNC Services in Vietnam 

According to mentioned machines above, there are 3 main manufacturing with different CNC technology used to apply each field:

• In furniture manufacturing: Processing patterns and engraving details quickly. 
• In manufacturing household appliances and assembling vehicles: Processing molds, for refined designs.
• In steel structure machining: CNC cutting machines are used to cut complicated metal shapes with absolute precision. CNC cutting torch is used to cut oxygen and plasma, which is more advanced than laser cutting.

In CNC manufacturing, machines are operated via numerical control, wherein a software program is designated to control an object. The language behind CNC machining is alternately referred to as G-code, and it’s written to control the various behaviors of a corresponding machine, such as the speed, feed rate and coordination.

Recently, Vietnam become a major alternative manufacturing destination for businesses that are seeking to diversify their supply chain amid uncertainties caused by the pandemic and the US-China trade war.

In 2020, Vietnam had about 110,000 firms in the manufacturing sector, which was approximately 2.5 times higher than in 2010. Net revenue of manufacturing industries went up from US$100 million in 2010 to nearly US$450 million in 2019.

Conclusion

Vietnam has been actively developing CNC Machining industry recently and has initiated an export-oriented development strategy. Coupled with changes in customer demand recently, Vietnam companies also accelerate their CNC Machining services diversification. The transformation of manufacturing and automatic digitization of factories also opened up the development of Vietnam companies.

FAQs

What is CNC machining?

CNC (as known as Computer Numerical Control), is the process of using a computer-controlled machine to remove material from a workpiece. This is done using sharp cutting tools that are available in various shapes and sizes, and are precisely controlled by the computer.

How does CNC Machining work?

CNC Machining (Computer Numerical Control) refers to a process method for machining parts on CNC machine tools. The process rules of CNC machine tool processing and traditional machine tool processing are generally consistent, but there have also been significant changes. 

A machining method that uses digital information to control the displacement of parts and tools. It is an effective way to solve the problems of changeable parts variety, small batch, complex shape and high precision and realize efficient and automatic processing.

How much is CNC machining service?

Their prices generally range from $35 – $40 per hour for 3-axis machines, multi-axis machines cost $75 – $120 per hour.

What are CNC machining services?

Computer Numerical Control Machining, or more commonly referred to as CNC machining, is the automation of the movement of machinery or factory tools. Pre-programmed software controls this automated movement. It is used to control a wide range of machinery like mills, grinders, lathes, routers, etc

Why are CNC services so expensive?

Due to the involvement of more complex parts, CNC milling is more expensive than other types of machining operations. The machining expenditures increase with the increase in axes of the milling machines.