Hazards of machining magnesium pdf

It was created by taking the requirements of the metals standards nfpa 480, standard for the storage, handling, and processing of. The automotive industry in particular has an upcoming interest in the use of magnesium alloys. Cadmium for pdf home occupational safety and health. Magnesium oxide page 2 of 6 this fact sheet is a summary source of information of all potential and most severe health hazards that may result from exposure. The information contained in this safety facts applies only to the subject referenced in the title. One of the most significant limitations to mill use is the ability to properly and securely clamp or. Pdf magnesium alloys have been increasingly used in automotive and. Magnesium is important for many biochemical processes and is therefore quite common in humans. Magnesium usually does not react with water, but oil based coolants would probably be better, because magnesium can react with very hot water, ie steam, and very small magnesium powder is more reactive than big magnesium chips. Chemical element, metallic, symbol mg, situated in group iia in the periodic table, atomic number. There are some properties which makes magnesium better metal to machine as compared to other. Hazards of machining magnesium 1 no waterbased coolant. Water soluble coolant is not recommended, as magnesium and water are highly reactive.

Methods for prevention of ignition during machining of magnesium alloys article pdf available in key engineering materials 447448. Machining of magnesium and magnesium alloys asm digital library. Welding welding is a method for joining pieces of metal. Chapter on recycling and waste management facilities. Magnesium is classified as an alkaline earth metal and has 2 hydration shells. Special precautions to be taken in processing, handling and storage. Potential health effects if dusts or fumes are generated by processing eyes. Magnesium is machined in lowvolume production on small, manually operated machine tools and on large, specially built, completely automated transfer machines operating at high production rates.

Its relative density is 1,74 and its density 1740 kgm 3 0. Machining magnesium and magnesium alloys pages 820830 general information. Eye contact rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Can cause irritation of upper respiratory tract, metal fume fever and other health effects. The specific cutting power is low and the surface is excellent and the chips are short.

Material identification company reissue date identification number thyssenkrupp materials na, inc. Training is necessary for each employee who is required to use ppe. A39559 the majority of magnesium is stored in the bones 50%, while the remainder is stored in muscle, soft tissue, red blood cells and serum. Thats funnybut a simple way to prove that magnesium does burn underwater is take your typical childrens sparkler and put it in a bucket of water. Explanation of the health hazards associated with cadmium exposure see appendix a of the cadmium standard at 29 cfr 1910. Powder or dust from grinding or other operations can present an explosion hazard. Protecting workers from the hazards of abrasive blasting materials abrasive blasting uses compressed air or water to direct a high velocity stream of an abrasive material to clean an object or surface, remove burrs, apply a texture, or prepare a surface for the application of paint or other type of coating. Problems and hazards when machining magnesium and its alloys. Magnesium mg alloys, the lightest of structural materials on the earth, possess great potential to be used in important sectors such as automobiles, aerospace, and biomedical applications. It was assumedthat each worker breathed 10 cubic metres ofair per day.

Always have dry sand, flux such as m310, or a class d fire extinguisher available when. Fluorosis and magnesium foundries theconcentration was 60 mg. The influence of tool coatings in machining of magnesium. Cutting forces such as power consumption and shape of chips are generally taken in defining machinability. This article focuses on the factors that affect the machining of magnesium. A new customer has a few jobs to quote, machining magnesium parts. The possibility of fire when machining magnesium is always a real concern. Introduction to magnesium alloys asm international. However, individual components of the material have been found to be toxic to the environment. Since 1968, specmaster has been an industry leader in machining a variety of complex parts from magnesium. Metal fuel fabrication safety and hazards presentation. Machining is an important method used to process magnesium alloys. Machining of magnesium and magnesium alloys machining.

It is possible to achieve a high cutting speed for magnesium alloy, there are however, concerns that with an increase in cutting speed, there may be serious flank buildup fbu due to. Processes that generate large particles are usually performed in an open shop environment with no special ventilation. Water reacts with magnesium to form hydrogen which is flammable and potentially explosive when mixed with air. However, if proper pre cautions are taken, this risk can be reduced greatly. Hazards of machining magnesium practical machinist. Magnesium may react with moisture or acids to evolve hydrogen gas, which is a highly dangerous fire or explosion hazard. Magnesium is known for a long time as the lighter structural metal in. Safety practices for machining copper beryllium alloys. Check with the shop instructor or supervisor before machining unusual or unique materials such as composites, plastics, titanium, magnesium, or beryllium copper. Use of water on molten magnesium will produce hydrogen gas and may cause an explosion. Safety data sheet according to 29cfr19101200 and ghs rev. Jul 01, 2014 this file may not be suitable for users of assistive technology. Another risk when machining magnesium dry is its high reactivity.

Magnesium ribbon and fine magnesium shavings can be ignited at air temperatures of about 950f and very finely divided powder has been ignited at air temperatures below 900f. Magnesium metal 7439954 99 100% all concentrations are percent by weight unless ingredient is a gas. Because of their complex metallurgical structure, their machining characteristics are superior to those of pure aluminum. Common dietary sources of magnesium include nuts cashews, peanuts, almonds, beans, bananas, apples, carrots, broccoli, and leafy greens. The heavy envelopes enclose data for a given class of material. These materials may create secondary hazards including fire and toxic fumes. Zinc is not listed as a carcinogen by osha, ntp, iarc, acgih or the eu see toxicological information, section 11. Protecting workers from the hazards of abrasive blasting. A quick visit to their shop, and there are no heroic fire suppression efforts. Methods for prevention of ignition during machining of. Machining of magnesium firstly, the meaning of machinability is the ability of material to machine or the ease of machining a metal. Origin and development of nfpa 484 nfpa 484, standard for combustible metals, metal powders, and metal dusts, 2002 edition, is a comprehensive combustiblemetal fire safety document. Magnesium is the fastest machining metal and it has a high thermal conductivity. Autoignition temperature is for magnesium turnings or ribbon.

Control of welding hazards includes avoiding eye injury, using respiratory protection, ventilating the. The influence of tool coating s in mach ining of magnesium abstract magnesium is the lightest metal used in construction and therefore offers the greatest potential for weight reduction. Pieces 3 mm thick are difficult to ignite but possible when heated to near the melting point. Zinc metal has relatively low bioavailability and poses no immediate ecological risks. Standard for the storage, handling and processing of magnesium solids and powders if a digital product is offered and you select pdf or digital access, you are purchasing a license to access nfpa information electronically. Thermal decomposition can lead to release of irritating gases and vapors. In machining of magnesium alloys, waterbase cutting fluids can be effectively used to eliminate the buildup formation and minimize the possibility of chip ignition. When heated in air to a temperature near its melting point, magnesium alloys ignite and burn with a white flame. Safe machining of magnesium parts by cutting and burnishing. Machining magnesium is risky business, as the chips and dust generated are flammable. It will keep burning because the majority of the material that makes it look so cool while it burns isyes, you guessed it, magnesium. Just a few drill tap machines they outsource a lot of their production, beyond their in house machining.

The oil functions primarily as a coolant, reducing the risk of fire, which is common to magnesium machining. May react slowly with water to liberate hydrogen, a flammable gas. A research consortium has developed a novel way to extract magnesium particles out of the machine by vacuuming them through a hollow tool and spindle during machining. The authors con sidered there was evidence that workers in these occupations were exposed to a risk of. Machining copper beryllium is a ductile metal that machines easily. You may make both very fine magnesium particles and hot water machining with water based coolant. Suri me scholar1, production engineering department, pec university of technology, chandigarh, india associate professor2, production engineering department, pec university of technology, chandigarh, india. Safety practices for machining copper beryllium alloys drilling, boring, milling, turning, tapping, reaming, sawing, etc. Safety and health topics metalworking fluids safety. Since magnesium will ignite and burn fiercely when heated to a point near its melting temperature, certain precautions should be taken during working of it. May emit fumes of magnesium oxide under fire conditions.

In machining of magnesium alloys, waterbase cutting fluids can be effectively used to. Material safety data sheet magnesium chloride, acs 3 section 7 handling and storage handling. Magnesium has very good machining abilities like sawing, punching, drilling, milling, turning compared to other metals. Our skilled machinists have years of experience and an extensive knowledge of various machining strategies to produce your magnesium components. It is possible to achieve a high cutting speed for magnesium alloy, however, there. Pdf methods for prevention of ignition during machining. The osha hazardous waste operations and emergency response standard 29 cfr 1910. Dust, turnings, or fine pieces may ignite easily when presented with an ignition.

Show this safety data sheet to the doctor in attendance. The microconstituents present in alumi num alloys have important effects on ma chining characteristics. Schilling fromthe departmentforresearch in industrial medicinemedicalresearch council, thelondonhospital received forpublication, june9, 1947 introduction magnesiumalloys were first used in. Also includes requirements for metals not listed above, that exhibit combustible metal characteristics capable of combustion or explosion. Exposure to magnesium oxide can cause metal fume fever. Magnesium machining practices and precautions magnaloy. Spills and emergencies if employees are required to cleanup spills, they must be properly trained and equipped. Machining copper beryllium is a ductile metal that machines easily, generally producing large chips and turnings. For over 15 years weve specialized in complex surface machining and are capable of reproducing even the most challenging geometries. If you use assistive technology such as a screen reader and need a version of this document in a.

Magnesium oxide 9484 1 mullite 2938 1 silicon dioxide 7631869 1 zinc powder 7440666 1 the ingredients may be released as general dust from the product by operations such as overheating, burning, machining, abrading, or riveting. Pdf the science, technology, and applications of magnesium. However, when high speeds are used, there is the danger of fire, particularly when fine chips are being produced. Machjning of aluminum and alumjnum alloys aluminum alloys can be ma chined rapidly and economically. Traditionally a low viscosity oil has been the recommended cutting fluid for magnesium machining. Metal dusts may migrate into soil and groundwater and be ingested by wildlife. No crashes or other events that could cause heat or sparks allowed. This machinability quantifies the machining performance, and may be defined for a specific application by various criteria, such as tool life, surface fi nish, chip evacuation, material removal rate and machine. Dec 06, 2004 developing a safer way to machine magnesium machining magnesium is risky business, as the chips and dust generated are flammable. Magnesium alloys have been increasingly used in automotive and aerospace components and in portable microelectronic devices due to their ultralightness and high specific strength.

To avoid the generation of excess heat and reduce the risk of fire tools should never be allowed to dwell on the surface of the machined part. Some use mineral oil, i cut dry, conservatively in speed. Material safety data sheets, operating manuals for machines, and any warnings of the companies that made the machines, tools, and chemicals used in the shop should all be considered in the final assessment. Magnaloycouplingcompany technicalproductinformation couplings thepossibilityoffirewhenmachiningmagnesiumisalwaysarealconcern. Check with all local codes before machining magnesium. The right to know hazardous substance fact sheets are not intended to be copied and sold for commercial purposes. Pdf methods for prevention of ignition during machining of. Vanvalkenburg chemical name formula dot dot identification no. General advice show this safety data sheet to the doctor in attendance. The first part of this presentation provides a brief educational overview of the electrical discharge machining process edm second, a detailed analysis of when,why and where edm can provide a huge benefit in the engineering, design and implementation of the overall tool manufacturing process. Machining, magnesium, hydrogen abstract in machining of. Information about where and how cadmium is used, stored, and released at the worksite, including processes or operations that involve potential cadmium exposure, especially above the pel. Nuclear criticality 100 kg reduction of natural uranium hazards.