Aluminium Weldings & Aluminium Solderings

NAME: Aluminum (as Al), Welding Fumes

IMIS: A102

GAS: 7429-90-5

DESCRIPTION:Aluminum is an indispensable metal to modern manufacturing. Its low density and corrosion resistance make it the preferred metal for many manufactured products, from spacecraft components to beverage cans. The U.S. is the world's largest consumer of aluminum.

Metal arc welding on AluminiumChallenge exposure to Aluminium welding with flux-coated electrodes, as well as with electrodes without flux, elicited marked asthmatic reactions. Manual metal Arc welding on mild steel did not cause significant bronchial response. The results of inhalation challenges combined with exposure assessments provided evidence that aluminium.

Melting points	L	W	H	Aluminium (Kgs)	Weight (Kgs)	Select for quotation
660 .32.C	105	105	36	25	1.5
597.23.C	130	130	25	20	1.0

Pure Aluminum, a silvery-white metal, possesses many desirable . It is light, it is nonmagnetic and nonsparking, stands second among metals in the scale of malleability, and Melting in ductility. The aluminium temparature starts points is 200 to 1600 degrees and weight persentages is 0 to 100 degrees we will follow in below graph.

Arc welding fumes have previously not been protected by a permissible exposure limit, OSHA is establishing a PEL of 5 mg/m3 TWA for these fumes, (measured in the breathing zone of the welder; the details of the appropriate positioning of the sampler should be determined on the basis of guidance in the Field Operations Manual. This is consistent with a past OSH Review Commission decision. The Agency concludes that this limit will protect welders and other workers in the vicinity of the welding from experiencing the significant irritation potentially associated with inhalation of these fumes; OSHA finds the respiratory irritation caused by exposure to these fumes.

Aluminium Properties Welding Aluminium with DC and Metal Transfer Mode. Aluminium Alloy Classification and common defects. Power source of Aluminium and shielding gas selection. Identify common defects found in Aluminium welds. Appropriate metal transfer modes for welding Aluminium.

Advantages Classify Common elements according to their weldability. Pore Formation in weld metal in submerged arc welding. Optimization of parameters of gas sparing using algorithm. Evaluation of welding condition on the probability metal. Effect on the factors of welds with ultra low carbon.

Plasma Cutting Torches & SPares

Model:SD-300TP-5, SD-500TP-5
Introduction:Mixed use of argon arc welding, pulse argon arc welding, manual argon arc welding, it has energy saving control circuit to exert the reliable operation. Anti-flush, small splash, fine moulding, easy slag release, strong anticorrosion, low carbonous
H.S CODE:8515800090
Model:SD-300TP-5, SD-500TP-5

Benefits:

* Improves weld quality through a stiffer more controllable arc
* Reduces cost through reduction in weld "cutting" defects
* Reduces welding times
* Narrower weld with greater penetration at any given electrical current setting
* More desirable Heat Affected Zone (HAZ)
* Reduces dependency on operator's skills
* Expands the capabilities for joining thicker materials with relatively low heat inputs.

The Ternary-Gas Plasma Arc Welding (TGPAW) torch functions by utilizing three gases: a primary inert plasma, a secondary inert plasma gas, and an inert shielding gas.

The Primary inert plasma is directed through the body of the welding torch and out of the body across the tip of a welding electrode disposed at the forward end of the body.

The Second plasma is disposed for flow through a longitudinal bore in the electrode. The thickness of metals (ferrous and non-ferrous) with less total heat

The Third inert plasma is "shield" that is directed through the torch body for circulating around the head of the torch adjacent to the . The following diagram illustrates ternary system.

Hazard: Steel Plate cut by Handheld cutting torch is left with a rough uneven edge that must be ground to fit in place. This need to grind the edge results in exposure to hand arm vibration and the possibility of getting foreign bodies in the eyes.

Solution: A smooth edge can be cut in steel plate see plate on using numerical control plasma cutting machines. The resulting smooth edges minimize or eliminate the need to grind the edge smooth.

Industrial Grade Diesel Generators

Major advantages

The pressure profile of the 100 kW generator, running for a day. The Pressure measurements were taken every second. Different segments of the depict different engine load settings:

1. Idle, for about 1 hour

2. 40 kW, for about 3.5 hours

3. 80 kW, for about 30 minutes.

The Back pressure for the 225 kW generator, after the installation of the RYPOS TRAP. As in the following settings can be distinguished:

1. The first part shows the engine idling for about 30 minutes.

2. The second part, 125 kW for about 20 minutes.

3. The third part, 175 kW for 20 minutes

•The cleanest greenest alternative for Electricity gGneration is probably solar electric in most situations. Installing a photovoltaic power system on your rooftop can make you part of the solution, feeding clean solar electricity back in to the grid at maximum power on those sunny afternoons when the utility system is most likely to be overstrained by air conditioning and needs it most.

•(PowerLight (www.powerlight.com 510-540-0550 in Berkeley California, but with offices around the US) is the firm I am aware of that probably knows the most about commercial scale systems.

•You need to be able to keep the voltage steady when a cloud passes over and, of course, you need to be ready for the outage to happen at night or on cloudy days as well. Storage issues with wind energy are similar. Storage technology is primitive compared to the solar modules that make the electricity.

Before the Installation of each of the RYPOS TRAPs, the following operation characteristics of the diesel generator were monitored to help evaluate the performance of the trap:

a. Engine Load

b. Engine Speed

c. Exhaust Temperature.

Exhaust samples were collected before and after the installation of the systems and the Total Particulate Matter (TPM) measurementswere used to evaluate the Traps’ efficiency

Diesel Generators have several advantages over other internal combustion engines.

* They burn less fuel than a gasoline engine performing the same work, due to the engine's high efficiency and diesel fuel's higher energy density than gasoline.

* They have no high-tension electrical ignition system to attend to, resulting in high reliability and easy adaptation to damp environments.

* They can deliver much more of their rated power on a continuous basis than a gasoline engine.

* The life of a Diesel generators is generally about twice as long as that of a gasoline engine due to the increased strength of parts used, also because diesel fuel has better lubrication properties than gasoline.

* For any given partial load the fuel efficiency of a diesel generators remains nearly constant, as opposed to gasoline and turbine engines which use proportionally more fuel with partial power outputs.

Projection Welder -Seam Welder

Gas Welders:

Make the weld by guiding the arc, with its intense heat, along the edges of the metals to be joinedSelect proper types of welding torch tip according to the metal and the job being done.

* Gas welding torches
* Gas shielded arc equipment
* Arc welding torches
* Blueprints and templates
* Submerged arc welding equipment
* Clamps and calipers
* Rules, squares, and hand tools

You Should Prefer:

•ARC WELDERS join metal parts using electric Arc welding equipment.
•PRODUCTION LINE WELDERS join metal parts on production lines, using pipes lines or gas equipments.
•GAS WELDERS join metal parts together using gas Welding equipment and combine their own techniques in the parts .
•EXPERIMENTAL WELDERS analyze engineering data and weld experimental parts to determine the most effective welding process, using various Welding methods and Equipment.

Standard Features:

The work of arc, plasma, and flame cutters is closely related to that of welders. However, instead of joining metals, cutters use the heat from burning gases or an electric arc to cut and trim metal objects to specific dimensions.

Cutters also dismantle large objects, such as ships, railroad cars, automobiles or aircraft. Some operate and monitor cutting machines similar to those used by welding machine operators.

Welders often work in a variety of awkward positions, having to make welds while bending, stooping, or working overhead. In some settings, however, working conditions are much better and there are few hazards or discomforts. Overtime is sometimes necessary to complete special projects.

Occupational Exposure Limits for Manganese

Agency : Occupational Exposure Limit
NIOSH REL : 1 mg/m3 (TWA) and 3 mg/m3 (STEL)
NIOSH IDLH : 500 mg/m3
OSHA PEL : 5 mg/m3 (ceiling)
ACGIH TLV : 0.2 mg/m
IDLH: immediately dangerous to life and health concentration
PEL : permissible exposure limit
REL : recommended exposure limit
STEL: short-term exposure limit
TLV : threshold limit value
TWA : time-weighted

Equipments Used By Welding Process:

* Servicing and installation must only be undertaken by a qualified licensed electrician. Never tamper with electrical supply circuits or systems. The welder is only responsible for making connections in the welding circuit and for setting external welding machine controls.

* Equipment should be well maintained and checked regularly, particularly the insulation and connections on work return leads and holders.

* Electrodes or welding wire should never be touched with bare hands when in the holder or welding gun. Holders or welding guns should never be held under the armpits. Remember, hot work increases risk due to the reduced skin resistance when sweating occurs.

egulations (Standards - 29 CFR) - Table of Contents

• Part Number: 1910
• Part Title: Occupational Safety and Health Standards
• Subpart: Q
• Subpart: Welding, Cutting, and Brazing
• Standard No: 1910.254
• Title: Arc welding and cutting.

1910.254(a)

General -

1910.254(a)(1)

Equipment selection Welding equipment shall be chosen for safe application to the work to be done as specified in paragraph (b) of this section.

1910.254(a)(2)

Installation Welding equipment shall be installed safely as specified by paragraph (c) of this section

* The arc - the temperature can reach 6000 degrees celsius. The intense ultraviolet and infra-red rays can be harmful to both the welder and anyone else nearby.

* The electrical circuit - the electrical circuit is perhaps the greatest hazard to the welder. The risk of electrical shock is high and welders should note the following points:

o Never attempt to change welding cables before switching off the power.
o Always install the welding machine as near as possible to the power point.
o Always keep the welding machine terminals and cable connections clean.
o Work on a well insulated floor wherever possible.
o Always wear dry gloves when Handling equipment that is live.
o Always get a qualified electrician to do any electrical repairs.

Kempler Industries

PlasmaDrill Cnc precision plasma cutting

Welding Machines And Cutting Equipments

All arc completely, insulated, flexible type, capable of handling the maximum current requirements of the work in progress, taking into account the duty cycle under which the arc welder or cutter is working.

The unit is to be installed by the manufacturer on the cutting table provided and integrated with the existing equipment by the manufacturer. This equipment must be certified safe for use in explosive operations. As of this date, only one source has been qualified.

The frames of all Arc welding and cutting machines shall be grounded either through a third wire in the cable containing the circuit conductor or through a separate wire which is grounded at the source of the current. Grounding circuits, other than by means of the structure, shall be checked to ensure that the circuit between the ground and the grounded power conductor has resistance low enough to permit sufficient current to flow to cause the fuse or circuit breaker to interrupt the current.

Whenever practicable, all Arc welding and cutting operations shall be shielded by noncombustible or flameproof screens which will protect employees and other persons working in the vicinity from the direct rays of the arc.

When operations are suspended for any substantial period of time, such as during lunch or overnight, welding machines shall be shut off at some point outside the confined space. Where practicable, The electrodes and electrode holders shall be removed from the confined space. Upon completion or discontinuance of welding operations, the welder shall provide some means of warning other workers of the location of hot metal.

Cutting-Torch

High levels of lead are emitted when welding or burning takes place on lead-painted steel structures. The exposure can come from a large variety of construction projects from bridge rehabilitation to demolition of a high-rise building. Welding is a process that joins two pieces of metal together, generating many hazardous compounds from the metal itself. Both welding and cutting cause the metal, and its coating to be released in the air as fumes, making it available for inhalation by workers.

Cuttings are performed with the operator’s back close to vertical and the hands not move above shoulder height.

Where possible, Cut from a standing posture with the feet braced and the body balanced. (In some circumstances it may be necessary to kneel on one knee to enable cuts to be made close to the floor. In this situation, protection for the knee will be necessary).When cutting horizontally across a wall, the operator’s hands are at waist height

Weldings

Welding is the most common way of permanently joining metal parts. In this process, heat is applied to metal pieces, melting and fusing them to form a permanent bond. Because of its strength, welding is used in shipbuilding, automobile and repair, aerospace applications. Welding also is used to join beams when constructing buildings, bridges, and other structures and to join pipes in pipelines, power plants, and refineries.

Welders and cutters may work outdoors, often in inclement weather, or indoors, sometimes in a confined area designed to contain sparks and glare. Outdoors, they may work on a scaffold or platform high off the ground. In addition while bending, stooping, or standing to perform work overhead.

The work of arc, plasma, and oxy-gas cutters is closely related to that of welders. Cutters use the heat from an electric arc, a stream of ionized gas called Plasma, Cutters also dismantle large objects, such as ships, railroad cars, automobiles, buildings, or aircraft. Some operate and Monitor cutting machines similar to those used by Welding machine operators.