Because their operation involves high demands on the entire machine, hydraulic presses need extra attention, regular maintenance and a series of measures to ensure correct and safe operation. Find out in this article what you need to know about these devices in order to use them properly.
The press is among the equipment used in a variety of fields, because it can perform a series of operations that no other equipment can perform as efficiently. It is used to straighten, bend, punch, punch, shape metals and other hard materials, with surfaces of different sizes, applying a force of several tens of tons. It is also a very popular device in small workshops. If you are interested in such a device, it is good to know a few basic things about using it.
How it works
The hydraulic press uses Pascal’s law, a liquid and communicated cylindrical vessels, to efficiently multiply the force exerted at the operating point, obtaining a much higher force in the working area, at the level of the main cylinder. The system is operated manually, by means of a lever, or automatically, and the pressure inside the circuit is monitored by means of a manometer.
The main defects that can occur
We know that in the first days, weeks or months after purchase, this topic is one that interests you less than how to use it effectively. But it is good to know the weaknesses of such a machine, to follow them carefully and intervene early, increasing life and efficiency.
Among the most common faults are, for example, oil leaks, which can occur in the gaskets, through the hydraulic system, or even in the joints of the support frame and can be caused by liquid contamination, weakening of the gaskets, etc. Because they can lead to more serious damage, endangering the safety of the operator, they must be addressed in time.
Equally risky are overheating, pressure loss and damaged components that are not noticed and repaired in time.
The importance of careful and complete training
The use of a hydraulic press is a specialized activity, which has associated sufficiently high risks of injury to impose a meticulous and complete preparation. So do not start using the device before you know it very well: the protective measures you must take at each start, where it is and how to use the safety brake, what to check before use, how to maintain it correctly. the device and how it is used for different conditions (materials, processing, etc.).
Beyond this general training, it is also important to know very well what each processing entails and what result you have to obtain, so that you do not have to work twice.
The periodic, careful and complete verification of the machine is part of the necessary measures to ensure the correct operation of the press. The process includes the analysis of the seals – to identify traces of wear, of the hydraulic fluid – to make sure that it does not contain impurities and does not need to be changed, of the tubes – for possible cracks. and the metal frame of the press – for deformations or cracks.
It is equally important to monitor the level of vibration created during operation, as well as the noise made by the machine, to observe any differences.
Maintenance and repairs
If you think about the difficult and demanding operations performed by a hydraulic press , the high pressure and temperatures it works with, you will realize that in order to use it in good conditions you must use it. undergo repairs from time to time.
We are talking in this case about a detailed control, performed by a specialist and the replacement of components that show signs of wear, even if at that time they do not cause you problems.
The risks to which the operator is exposed
Hydraulic presses can make enough noise to affect your hearing, especially if you use such a device frequently. Therefore, they usually require the use of earphones that protect the ears.
Because they are used to process metals and other hard materials, hands are also exposed to cuts and scratches, which is why operators working with these devices must use gloves with reinforcements, which prevent accidental injury.
Another type of accident, which often happens near these devices, is the escape of heavy objects that can hit the feet, as well as the passing of hard, sharp or sharp residues with the sole. The correct and safe operation of a press therefore requires the use of suitable, professional footwear, with hard inserts and thick sole.
Plastics, plexiglass, glass, ceramics, even metal, also involve the occasional projection of particles to the face, which can reach the eyes. In these cases, the work equipment must be completed with goggles or a mask.
Because oil or liquid leaks under pressure from the hydraulic system can mean exposing the skin to high temperatures and toxic substances, it is good for the equipment to cover as much of the body as possible, even on summer days.
Loading heavy objects on the work table can cause the press to overturn on the worker, if it is not fixed correctly and stably on the floor, causing serious accidents, and the loss of pressure from the hydraulic system can lead to a sudden drop of the piston over the hand. carefully the material in the work area.
The high weight of the processed materials also exposes you to the risk of injuring your back and spine. This happens if you do not lift them properly, using the force of your feet, without bending the spine, and do not resort to the possibility of lowering and raising the work table, when the device includes this automatic option.
Simplicity means safety
Although you will probably be tempted to buy a more complicated model, associating complexity with high performance, it is good to know that the more such a machine contains more elements, the more risks it has to break and the more points. weak. So try to look for a simple and solid model, whose operating system you can easily understand and follow.