In order to prevent unwanted chemical reactions, this step takes place in a chemically non-reactive atmosphere. This can be achieved by using an inert gas such as argon. To ensure that the coating thickness is uniform across the entire workpiece, the workpiece is rotated about multiple axes during this step.

PVD coatings are a form of surface finishing. PVD stands for Physical Vapour Deposition. The coating material is applied to the workpiece by means of evaporation. PVD coatings are used to protect the workpiece surface and improve its properties, both decoratively and functionally. These coatings stand out thanks to their brilliant colour quality. The Härtha hardening plant is your partner for all your PDV and PaCVD coating needs. Our state-of-the art technology and well-founded know-how ensure that we complete your order on time and to the highest quality. We look forward to hearing from you.

PVD coatings are used across a multitude of industries and for a wide variety of components: Cutting tools Forming and shaping tools Plastic moulds Industrial components Automotive components Jewellery and watches Medical engineering Decorative and sporting applications Aluminium die casting

Would you believe all I did was turn my wrench cw & ccw 2 or 3 times and the rings just slid right off.Shows how they are just barely holding .But it was on a 3/4 copper hot water supply line and I just didn't have them real tight I guess.Anyway everything turned out ok.

Find a location near you. Our location overview shows you which Härtha locations offer PVD coating and which other metalworking processes we provide.

At Härtha, we offer you the PVD coating and DLC coating processes. We coat workpieces of different sizes, from the micro range to a diameter of 500 mm. In addition to standardised coatings, we also develop tailor-made solutions that will fit your specific application.

Thanks jimmy-o in (CA) but I'm going to add copper tubing in place of the ss braided line and I just need the room to solder the new tubing so I wanted to remove the ring.So the hacksaw method with the screwdriver seems the way the majority are using

Before we can quote you an offer for PVD coating or find a different coating solution for you, we need you to provide us with the following information first:

The key advantages of PVD coatings at a glance: Great dimensional stability thanks to low coating thickness High adhesive strength Increase in wear resistance and hardness Reduced friction, thanks to smooth surfaces Coating temperature up to 450 °C Any type of layer structure (mono-layer, multi-layer) Visual refinement

Thanks jimmy-o (CA) I appreciate the advice.I think I'll just cut it with hacksaw and make a groove then pop it off with screwdriver-seems that's what most people are doing!

PVD coatings are suitable to function as wear-protection coatings. Frequently used basic types include titanium nitride, titanium carbonitride, and titanium aluminium nitride. An overview of coating systems and their properties can be found in our table.

The composition, thickness and properties of the coating can be controlled by the selection of the target, the process parameters, and the deposition conditions. This allows regulation of such factors as the structure and hardness of the workpiece, and also its thermal resistance.

PVD coating is a surface treatment. To prevent changes to the microstructure and hardness, and to ensure dimensional stability, the material must be subjected to a heat treatment appropriate to the coating.   Since PVD coatings can be applied below 500 °C, the process is highly suitable for high-speed steels, hot worked steels, and some cold worked steels.   Even steels tempered at very low temperatures are generally suitable for coating – with special coating systems for low-temperature processes (between 250 °C and 450 °C).

This will work, IF, the nut can be pulled back far enough to give access to the ring. Usually it can't be if this is a valve for a sink or toilet.

Thanks hj for the tip.It's for a hot water heater.I think I'll try and cut it then pop it off with scredriver.Then add new copper tubing in place of the ss braided lines.

Is there anyway to remove compression rings after they've been tightened or can I leave it on and solder a fitting under the ring using the same pipe.I don't like soldering and trying to keep from removing the pipe because the jointabove is where the shut-off valve is and I'll have to protect it from heat by either removing it or covering with wet rag.

PVD coating is a surface treatment. To prevent changes to the microstructure and hardness, and to ensure dimensional stability, the material must be subjected to a heat treatment appropriate to the coating.

Any hardware store has a compression ring puller. Only drawback is that if the nut was overtigthened to begin with, then the ring has made a significant divot in the pipe, and it may not be possible to get a new ring to seal. Many folks will leave the ring and nut in place, and just install the new valve. This is a reliable procedure, only complicated because some older valves had coarse threads, where virtually all new valves have fine threads. Some hardware stores specifically stock a "coarse thread" valve just for such an occasion.

Since PVD coatings can be applied below 500 °C, the process is highly suitable for high-speed steels, hot worked steels, and some cold worked steels.

The desired coating thickness furthermore depends on the size and purpose of the workpiece. In principle, the coating can be up to 10 μm thick. For micro tools, on the other hand, the coating thickness is usually less than 1 μm.

To deposit the evaporated material onto the workpiece surface, a reactive gas is now supplied, and this combines with the metal vapours. The choice of gas has an important influence on the properties of the coating. Generally, the gas of choice is either a gas containing carbon or nitrogen. These gases deliver strong adhesion, and form nitride and oxide compounds that protect against rust and corrosion.

Find a location near you. Our location overview shows you which Härtha locations offer PVD coating and which other metalworking processes we provide.

During evaporation deposition, the target is heated so much that the atoms on the surface are released as gas, and thus become available for the next step. Different techniques can be used to accomplish this. At Härtha, we use the arc technique.

We inspect all PVD coatings visually. If you require an in-depth test, we can recommend non-destructive testing methods.

At Härtha, we offer you the PVD coating and DLC coating processes. We coat workpieces of different sizes, from the micro range to a diameter of 500 mm. In addition to standardised coatings, we also develop tailor-made solutions that will fit your specific application.

Even steels tempered at very low temperatures are generally suitable for coating – with special coating systems for low-temperature processes (between 250 °C and 450 °C).

Before we can quote you an offer for PVD coating or find a different coating solution for you, we need you to provide us with the following information first: Purpose of application Material designation Thermal pre-treatments Desired coating thickness in µm

The compression ring is made of brass. Brass is very soft. The ring is also very thin and brittle. First try to pull it off, while twisting, with pliers. This often works. If that doesn't work, cut a slit in the ring with a hacksaw blade (in your hand) without going all the way through the ring. Don't let the blade touch the copper. Then fit a flat head screwdriver into the slit you made and twist the screwdriver to snap the ring.

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We inspect all PVD coatings visually. If you require an in-depth test, we can recommend non-destructive testing methods.

For PVD coating, high-purity, solid metals are used as layer materials. Depending on the desired properties of the coating, these metals may be, for example, titanium, aluminium, or chromium, as well as zirconium and silicon. This material is referred to as the target. The composition, thickness and properties of the coating can be controlled by the selection of the target, the process parameters, and the deposition conditions. This allows regulation of such factors as the structure and hardness of the workpiece, and also its thermal resistance. The desired coating thickness furthermore depends on the size and purpose of the workpiece. In principle, the coating can be up to 10 μm thick. For micro tools, on the other hand, the coating thickness is usually less than 1 μm. There are different PVD coating methods, and these can also be combined. Those most commonly used are: Arc-PVD: During arc evaporation, an arc is created between an electrode and the coating material in order to detach particles from the target. Sputtering: The target is bombarded with magnetically deflected ions or electrons Laser: Laser beams are fired at the material in order to initiate evaporation. At Härtha, we offer sputtering and arc coating. In principle, the different techniques all follow the same sequence of steps. Evaporation During evaporation deposition, the target is heated so much that the atoms on the surface are released as gas, and thus become available for the next step. Different techniques can be used to accomplish this. At Härtha, we use the arc technique. To ensure controlled conditions and prevent interaction with air molecules, evaporation takes place in a vacuum. Reaction To deposit the evaporated material onto the workpiece surface, a reactive gas is now supplied, and this combines with the metal vapours. The choice of gas has an important influence on the properties of the coating. Generally, the gas of choice is either a gas containing carbon or nitrogen. These gases deliver strong adhesion, and form nitride and oxide compounds that protect against rust and corrosion. In order to prevent unwanted chemical reactions, this step takes place in a chemically non-reactive atmosphere. This can be achieved by using an inert gas such as argon. To ensure that the coating thickness is uniform across the entire workpiece, the workpiece is rotated about multiple axes during this step. Deposition   In the final step, the evaporated atoms of the target condense on the workpiece surface, forming a thin film coating. Wear-protection coatings at a glance PVD coatings are suitable to function as wear-protection coatings. Frequently used basic types include titanium nitride, titanium carbonitride, and titanium aluminium nitride. An overview of coating systems and their properties can be found in our table.

For PVD coating, high-purity, solid metals are used as layer materials. Depending on the desired properties of the coating, these metals may be, for example, titanium, aluminium, or chromium, as well as zirconium and silicon. This material is referred to as the target.

Not surprising at all. The only time that wouldn't work is when the compression nut was overtightened to begin with. Thanks for letting us know how it went.

At Härtha, we offer sputtering and arc coating. In principle, the different techniques all follow the same sequence of steps.