arc lamps

Arc remelt and casting furnaces having both of the following characteristics:

Electric arc furnaces (annex II, category 3):

The feedstock to electric arc furnaces often contains oils, emulsions or greases.

In iron foundries, cupola furnaces, electric arc furnaces and induction furnaces are operated.

open-hearth furnaces and electric arc furnaces (EAF) where open-hearth furnaces are about to be phased out.

Electric arc furnaces used in secondary steel production can achieve an emission concentration value of 0.1 ng TE/m3 if the following measures are used:

Installations for the production of pig-iron or steel (primary or secondary fusion, including electric arc furnaces) including continuous casting, with a capacity exceeding 2.5 tonnes per hour.

The application of these technologies depends on the ore characteristics and requires the resulting product to be processed in an electric arc furnace, which should be equipped with appropriate controls.

PCDD/F emissions from converter steelworks for steel production and from hot blast cupola furnaces, electric furnaces and electric arc furnaces for the melting of cast iron are significantly lower than 0.1 ng TE/m3.

Weapons to which this Article applies which propel fragments in a horizontal arc of less than 90 degrees and which are placed on or above the ground may be used without the measures provided for in sub-paragraph 2 (a) of this Article for a maximum period of 72 hours, if:

Atlantic Arc

_S = degree of arc Î 2 7889

electric arc furnace processes;

IATA/ARC agency identification code,

Seine, downstream from Jeanne-d'Arc bridge in Rouen

Seine: downstream of the Jeanne d'Arc bridge in Rouen.

All arc-weight matrices are joined into matrices of arc-weight matrices: for input arcs in Y- and for output arcs in Y+.

These two matrixes have to exist for each arc in the network.

This layer was manually arc surfaced with covered electrodes.

Their surface must be parallel to within five minutes of arc.

The end surface must be parallel to within ten minutes of arc.

The number of tokens is defined in arc-weight matrices W- and W+.

Then the groove was filled by manual-arc welding from the inside.

The number of required input tokens which arrive at the transition within one arc has to be specified separately for each arc (see Figure 3).

The background current is needed only for maintenance of stable arc burning.

Finally, the weld was made from the outside by automatic submerged-arc welding.

The number of required input/output tokens is presented as the weight of a specific arc.

Divide by 2 7889 to convert _S to polarmetric degrees of arc (precision tubes of 200 mm;

In an analysis of submerged arc cladding, process productivity is also an important factor.

In all the cases, manual-arc cladding with Inconel 182 was carried out with a covered electrode.

Cladding was carried out with a strip electrode and manual-arc welding with a covered electrode.

Number 1 designates two segments of the outer shell, number 2 the weld, which was multi-layer submerged-arc welded, and number 3 the weld which was manually arc welded with a covered electrode.

The bevel geometry and its accuracy are in accordance with the gas tungsten arc welding (GTAW) narrow-gap process.

The other passes were made with an electrode of 4 mm diameter, current intensity of 135 A and arc voltage of 26 V.

Also the partition plate was then manually arc welded on the " buttering " layer with covered electrodes (6 - Fig. 8).

The radian is the angle between two radii of a circle which cut off on the circumference an arc equal in length to the radius.

The values in the matrices are 1 if the input/output arc between a specific place and transition exists, otherwise the value is 0.

The radian is the plane angle between two radii which, on the circumference of a circle, cut an arc equal in length to the radius.

The weld root was welded with an electrode having a 3.25 mm diameter, a current intensity of 95 to 100 A and an arc voltage of 25 V.

The weld root at the shell part having the wider diameter was first manually arc-tack welded from the outside. The alignment was checked.

Silicon is produced in electric submerged arc furnaces with carbothermic reduction of quartz (silica) in the presence of various types of carbon reductants.

The tube sheet (2 - Fig. 9) was then submerged-arc surfaced with a strip electrode, in the same way as the primary head, but with somewhat different materials.

For cladding with a positive electrode more strongly alloyed strips of austenitic stainless steel are used because of the submerged-arc and weld-pool processes.

The weld between the tube sheet made of Inconel 690 and the surfaced layer of Inconel 182 was manually arc welded with covered electrodes of Inconel 182 (8 - Fig. 9.

Every engine must be controlled by a single lever moving through the arc of a circle in a vertical plane more or less parallel to the longitudinal axis of the vessel.

An automatic welder made a single-run weld with the addition of a welding wire which melted in the arc and constituted the weld jointly with the tube sheet and the tube.

Submerged-arc welding was carried out with a current intensity of about 510 A, voltage about 30 V, welding speed of 0.5 m/min and heat input varying between 1.8 and 1.9 MJ/m.

where the steering gear is fully powered, it must be possible to obtain an average rate of 4° of rudder deflection per second through the entire rudder arc when the rudder is fully immersed and with the vessel at full speed;