Identification and prevention
Preventing hazards when using metal cutters
03
Apr
Apr
Use a metal cutting machine after being equipped with the knowledge to identify and prevent potential hazards during work.
1. History of the Metal Cutting Machine
- In the history of metallurgy, metal cutting has gone through many milestones.
- In ancient times, humans tried to develop basic tools and utensils to cut metal. The progress of civilization brought new demands for faster and easier processes. In metallurgy, the Industrial Revolution provided new capabilities.
- In the 19th century, with the development of steam systems, new requirements arose for shaping metal. Technology created a breakthrough that made metal processing more convenient. Metal cutting machines were part of this breakthrough.
2. What is a Metal Cutting Machine?
- A metal cutting machine is a type of machine tool used to cut, trim edges, or separate metal workpieces. Besides cutting metal, the machine can also cut other materials such as wood and plastic. Depending on the model and segment, machines have different power and cutting capacities.
- Metal cutting machines are widely used in many fields, especially in mechanical engineering and construction, helping work to be done quickly, easily, and efficiently.
3. Components of a Metal Cutting Machine
- Metal cutting machine consists of the following parts:
- Machine casing: The metal casing that protects the motor, cutting blade, and other parts of the machine.
- Machine body: The main part that forms the structure of the machine.
- Machine base: Large base for stability and balance during cutting.
- Legs of the machine: Comprised of four legs under the base.
- Electric motor: The most important part that powers the machine.
- Trigger or switch: Turns the motor on and off according to the user’s command.
- Protective guard: Covers the outer side of the cutting disc or blade to protect hands and prevent sparks from flying.
- Workpiece clamp: Holds the material firmly to ensure accurate cutting.
- Cutting disc: The key part that contacts and cuts the material.
- Handle: Used to hold and control the machine.
- Safety lock for transportation: Locks parts in place to ensure safety while moving the machine.
4. Operating Principle of the Machine
- The machine uses an electric motor to operate. It works by combining motor speed with the grinding disc to generate strong cutting force.
- With the high-speed rotation of the grinding disc, the blade easily separates iron, steel, or stainless steel workpieces.
- The motor shaft starts to rotate through an intermediate part that transmits motion to the saw shaft.
- The cutting blade wears down the metal workpiece, breaking it into sections as adjusted by the user.
- During use, the cutting blade also wears out and becomes dull. It needs replacement for sharper cutting, making the work easier and faster.
5. Potential Hazards When Using a Metal Cutting Machine
- Sparks during cutting may cause fires if they contact flammable materials.
- Metal fragments or sparks may fly into the user’s eyes.
- If the cutting disc is not securely attached to the motor, it may fall during operation.
- Accidental contact with the cutting disc while the machine is running can cause hand injuries.
- Protruding parts of the rotating mechanism can catch sleeves, hair, or loose clothing.
- Placing the machine on an inclined or slippery surface can cause it to slip or tip over.
- Electrical leakage may energize the casing or handles, causing electric shock.
6. Necessary Personal Protective Equipment (PPE) When Using a Metal Cutting Machine
- Users should equip themselves with full PPE to prevent potential hazards. The required protective equipment includes:
- Eye and face protection goggles
- Cut-resistant gloves
- Earplugs or earmuffs
- Electric tester pen
7. Measures to Prevent Hazards When Using a Metal Cutting Machine
When operating a metal cutting machine, users should follow these guidelines:
- Users with long hair must wear a cap and tie hair neatly.
- Wear short sleeves and close-fitting clothing to avoid entanglement.
- Check the machine casing with an electric tester before use to detect electrical leakage.
- Wear full protective equipment when using the machine.
- The machine should be placed on a flat, non-slip surface.
- The height of the machine should match the user’s comfortable working posture.
- Do not work alone; the workplace should have at least two people.
Important: Users must receive Group 3 Occupational Safety Training on using metal cutting machines.
8. Safe Operating Procedure for Metal Cutting Machines
The safe operating procedure for a bench metal cutting machine may include the following steps:
- Inspect components and equipment before starting to ensure the machine is working properly.
- Only use compatible components to prevent malfunction or damage.
- Wear gloves and safety shoes, and use eye and ear protection to guard against flying metal fragments and noise.
- Follow safety regulations from the manufacturer and labor safety laws.
- Ensure controls are in a safe position and locked before starting cutting.
- Use the machine carefully according to instructions. Avoid using the machine while tired or under medication.
- Maintain a safe distance from the machine to avoid injuries from sparks or fragments.
- Clean the machine after use:
- Turn off and disconnect the power before cleaning.
- Remove dust filters if any, and clean them.
- Clean the machine surface with water or a damp cloth. Avoid harsh chemicals.
- Clean accessories like cutting heads and discs with a damp cloth or brush.
- Store the machine in a clean and safe place after cleaning.
9. An Toàn Nam Việt’s Occupational Safety Training Capability
An Toàn Nam Việt is a reputable occupational safety training center in Vietnam. Training sessions are conducted continuously at factories, workshops, and construction sites, mainly in Ho Chi Minh City, Bình Dương, Đồng Nai, and Bà Rịa – Vũng Tàu.
Occupational Safety Training License
- An Toàn Nam Việt has been certified by the Department of Safety under the Ministry of Labor, Invalids and Social Affairs, certifying our eligibility to provide occupational safety and hygiene training.
Training Materials and Lectures
- Before training materials are used in occupational safety courses, they are reviewed by our academic representatives to ensure accuracy and effectiveness.
- Our instructors follow An Toàn Nam Việt’s standardized teaching methods, designed by experts to maximize knowledge absorption.
10. Reputable Safety Training Center in Ho Chi Minh City
An Toàn Nam Việt is proud to provide professional and reputable occupational safety training with the following advantages:
- Competitive training fees without compromising quality.
- Flexible training schedule adapted to company production.
- Fast certification process according to legal regulations.
- Experienced instructors with many years of expertise.
- Lessons tailored to occupational safety at enterprises.
- Dedicated and professional support for clients efficiently.
