บทความ เกจวัดแรงดัน

Automated surfacing of rotationally symmetrical parts
Everything from a single supply – it‘s greater than only a advertising promise! Over 50 drawings of various components served as the idea for the automation answer developed by EWM for pump protection valve manufacturer, Schroeder Valves GmbH in Germany. All of the leading specialist’s parts did have one thing in frequent, they had been all rotationally symmetrical. This was the start line for welding machine producer EWM in their mission to develop a custom automation answer tailor-made to this multifaceted challenge.
Automatic Recirculation Valves / Minimum flow valves from Schroeder Valves are used all around the world for transporting liquids using centrifugal pumps. Their areas of application embrace refineries, energy crops and nuclear crops, within the transport of liquefied natural gas (LNG), in addition to in offshore rigs. They are additionally used throughout the chemical and manufacturing business (steelworks, pulp, sugar, distilleries) and within the utilisation of renewable energies.
Different sizes – one utility.
The purpose is to weld all pump safety valve elements mechanically. These valves are connected directly to the pumps and guarantee continuous operation of the pumps to forestall them working dry or being damaged by cavitation throughout minimal move situations. The pump protection valve is basically made up of the valve body and the cone, which strikes inside the valve body. pressure gauge ดิจิตอล sealing surfaces between the valve body and the cone should be absolutely air and watertight. This is the one means to make sure correct functioning of the pump safety valve for decades to come. Normally, these components are made using low-cost building steel DIN 1.0460. The sealing surfaces are reinforced with stainless steel DIN 1.4370. This course of was previously carried out manually, however, as a end result of each the scarcity of excellent welders and growing high quality assurance necessities, automation of this step was essential. The internal diameter of the valve bodies and the cone diameters were between 32 mm and 400 mm. The parts being moved additionally differed vastly in weight, starting from a couple of hundred grams to two and a half tonnes. But all of the parts had one factor in common: they have been all rotationally symmetrical, making them good for an automatic process. With this as a place to begin, EWM was in a place to get the system planning ball rolling.
From Small to Big – Multiple Processing Stations
It soon turned clear that only a robot system would fit the invoice when it came to automating this particular course of. Having to take care of so many various half sizes was a trigger for concern. Large elements require a large welding positioner. These, nevertheless, can not provide the dynamics required for the smaller elements. This shortly gave rise to the concept of three processing stations: one massive L-positioner with tilting operate for the big valve our bodies, one small turning/tilting positioner on a system bench for the small valve our bodies, and a third station with a system bench with out positioners for any other parts. The height of the building was additionally a selected problem. The elements had to find a way to be placed on the benches with the crane. The crane hook, nevertheless, was solely approximately three metres excessive – extremely small for an industrial software. To guarantee accessibility while guaranteeing extraction, either the extraction hood or the system benches were made to be cell. The robotic was fitted in an especially small booth in the centre between the three stations. This booth also consists of each the ability supply and a Titan XQ. These are positioned behind the L-positioner on the large processing station. The Rob 5 drive 4X wire feeder mounted on the robotic arm ensures safe wire feeding. Access to the Fanuc Arc Mate 100 iD in all three stations in any respect essential positions can be ensured because of the intense arm size of two metres and optimised house contained in the cubicles.
Special torch for extreme areas
Each valve physique is supplied with a cone information which is welded from above. With an inside diameter of simply 32 mm, entry is extremely troublesome. For guide welding, the welder is unable to see the weld seam and instead should depend on their experience. Even for automated welding, these areas are very uncommon. EWM was only capable of accept this job as a outcome of they manufacture the torches, emphasising the significance of the welding torch for this software. The welding torch for Schroeder Valves is a particular construction with a very small torch head and unconventionally lengthy torch neck. Of course, the particular software needed to be tailored to accommodate this unusual design: as a outcome of dilution between the mother or father metallic and the armouring must be as low as possible, solely slightly energy is used. This ensures protected heat dissipation despite the intense welding torch dimensions.
Secure welding results by way of outlined parameters
As the parts had been rotationally symmetrical, it was simple to teach the components; instructing is at all times based mostly on the same packages. Even new elements could be welded automatically shortly. Users merely have to set the radius, variety of passes and the geometric dimensions of the surfaced components and the robotic management will deal with the rest. The desired welding result is all the time guaranteed because the welding procedure is defined with all of its parameters. The quality may also be proven retrospectively as all welding parameters are constantly monitored and recorded. Even though the system was initially designed and supposed for one particular application, Schroeder is already considering of recent ideas and makes use of. Schroeder want to check out a few of the various welding procedures that are included in the Titan XQ welding machine as normal. This will permit to additional optimise different kinds of surfaced elements. Schroeder are also trying to expand and enhance the vary of welding tasks.
There are hundreds of Schroeder Valves installed in vegetation in southern Africa defending assets at companies like Sasol, Eskom, Mondi and Sappi to name a few. Sulzer & KSB routinely use Schroeder valves to protect their pumps. Full repair and reconditioning facilities can be found at Valve & Automation’s Secunda and Durban Valve Repair Centres. Please contact sales@valve.co.za, www.valve.co.za or telephone 011 397 2833 or 0861 103 103 to be taught extra.
Post navigation
Share