Repair of threaded holes

Repair of threaded holes

It happens that the thread is damaged by disassembling the blocked bolt. In most cases, it is relatively easy to recover the full functionality of the connection. The approach to repair depends on many factors: location, degree of damage, size, weldability of the material, etc. Apart from the cost and time of reconstruction, all these factors must be taken into account when choosing the method of repair. We have recently been asked to reproduce the functionality of a threaded hole in the steam turbine body. In order to avoid mistakes in the future, the customer decided to keep the current thread size – hence the sleeve was selected as the […]

Working On Special Ship

Working On Special Ship

The shipbuilding industry in Poland does not look as bad as it is commonly thought. Polish private shipyards, in particular, build more and more complex ships, adding more and more added value, competing as well as cooperating with global giants such as Scandinavian ones. We have recently participated, of course adequately to the nature of our activity, in the construction of a crucial piece of specialist equipment for the ship for laying undersea pipelines. This is a giant spool, used for transporting and laying a prefabricated pipeline (or, for example, an energy cable or optical fiber), which is simply wound on it. The spool is several meters in diameter and, […]

Foundations

Foundations

How important are the foundations, you do not have to convince anyone. Especially if they are foundations on which complicated devices and machines will be placed. It is important that the pressure resulting from the weight of the seated structure is evenly distributed – to achieve this, bearing surfaces – foundation slabs – must meet structural requirements such as the mutual position of individual panels – determined by the permissible deviation of the relative height (max 1 mm) and maintaining the level and flatness of each foundation slab (max. ± 0.05 mm / m). The following are examples of foundation slabs (milling of large planes) and completed plate with measurements […]

Hydropower Plant Murkraftwerke Graz

Hydropower Plant Murkraftwerke Graz

In March 2017, ANDRITZ HYDRO begins supplying electromechanical equipment for a new hydro plant in the heart of Graz, the capital of the Austrian province of Styria. The start-up of the power plant is planned for the first half of 2019. Before the construction is completed, it is necessary to install the power plant equipment: turbines, generators, flaps, various types of drives and control systems. And here is the place for our services. Of course, as in a hydroelectric power plant, the main task is to process large-size flanges. It is a very avant-garde design, which can be seen in the following visualizations: More about the plant: The current state […]

The workshop metrology

The workshop metrology

Well-made measurements – quickly, accurately, repetitively – are a necessary condition of successful project. Two things are necessary for this: appropriate measuring equipment; trained and experienced staff. The measuring equipment must meet a number of requirements related to the nature of the work: most often there are remote measurement, resistance to humidity, dustiness and temperature changes. These requirements are met by Laser Tracker ™, which we use in our work. The measurements can be systematized as follows: For the needs of mobile machining: Before machining: initial dimensions and dimensional analysis – determination of allowances, determination of axes and theoretical points, marking out; During machining: dimensional inspection, necessary adjustments, forecasting of work progress; After processing: final dimensions, reporting; Metrological assistance: The service consists in performing measurements for disassembly and assembly works, including mobile machining; Assistance may cover the whole period of activities on the site; The result is ad hoc reports […]

Heat exchanger in chemical plant

Heat exchanger in chemical plant

Chemical Industry is very demanding customers. We are therefore glad that we are often chosen to carry out mobile machining services on elements of chemical installations. In this case, it was a heat exchanger on which we made three treatments: facing the face of the flange connection of the bottom of the heat exchanger and planning the face of the outlets together with machining the groove for the RTJ type seal (RT). While flanges planning is typical, routine work, the groove for the steel seal is a challenge – the requirements for dimensional accuracy and surface quality are much stricter than for other treatments. Confirmation of the right parameters of […]

The splineway

The splineway

In an unusual scenery reminiscent of the Star Wars droid factory, a small project for the implementation of a new splineway was carried out recently. During the exploitation it turned out that the sunk key connection is destroyed, and the current groove in the shaft so permanently deformated that it can no longer fulfill its role.