OUR SERVICES

PEELING

STAD can peel your products from 6.5 to 150 mm diameter. This operation is a preliminary step to grinding when the excess material thickness is greater than 1 mm. Peeling is a turning operation in which the bar advances through the machine without rotating on its own axis, unlike traditional turning. Three or four tools rotate around the bar to remove material. This technique allows to remove material from very long parts.

STRAIGHTENING

STAD has the technical resources to straighten your parts or bars. We can correct straightness defects in your cylindrical bars from 4 mm to 180 mm in diameter, using soft and hard steel, stainless steel, chrome-plated bars, titanium, low-frequency induction-treated bars, and tubes with a minimum thickness of 2 mm.

We can also straighten your shafts with different diameters (a drawing of the part is required for a preliminary analysis).

Please note: We do not straighten bars that have undergone through high-frequency induction treatment due to the risk of material breakage and the resulting risk of accidents.

We can process your bars from 1 m to 12 m in length using automatic, semi-automatic, or manual processes. We can achieve straightness of 0.1 mm/meter or less on finished products, down to 0.04 mm/meter.


CENTERLESS GRINDING

Centerless grinding is a cylindrical grinding operation in which the workpiece is placed on a support. This bar rotates between two grinding wheels whose position remains fixed. This technique achieves very precise tolerances, perfect roundness, and very smooth surfaces, even for very hard materials. Several centerless grinding techniques are available depending on the type of customer parts.

STAD is equipped with numerous centerless grinding machines able to proceed parts from 2.0 mm in diameter (1.6 mm in plunge) to 160 mm in diameter, with lengths up to 11 m. The main materials processed are soft and hard steels, stainless steel, Inconel, Monel, bronze, brass, and aluminum.

POLISHING:

STAD : Equipped with a polishing machine, we can process your bars from Ø 2 mm to Ø 150 mm with a roughness of Ra < 0.1 mm for lengths up to 11,000 mm, depending on the diameter.

REVEL : Equipped with a polishing lathe for cylinders up to 5000 mm in length and Ra < 0.05 in mirror polish quality.

MANDRELS

STAD offers drawing mandrels used in various industrial sectors. They are hardened to a hardness between 57 and 65 HRC, ensuring a long service life. Grinding is performed according to your specific needs.

The main caracteristics available are:

- Hardness between 57 and 65 HRC.

- From diameter 2.0 mm to 48 mm.

- Lengths up to 8200 mm depending on the diameter.

- Roughness Ra < 0.2

- Plain ends, external threaded ends in M14, M16, and M18 pitches.

- Internal drilling and internal thread according to your needs (M14, M16, and M18).

HARD CHROME PLATING

Hard chrome plating is used as a wear-resistant coating in mechanical applications where friction conditions are severe. Chrome plating involves coating a metal part with chrome, with the thickness varying depending on the desired improvement. This deposit is produced by electrolysis in a chrome solution. The recharging time is proportional to the thickness of the chrome and the surface of the part. All types of parts can be treated (cylindrical, flat or any other shape). The deposit thickness can vary between 5µm and 1 mm. Cylindrical grinding and polishing are necessary to finish the parts in the main cases.

This operation can be carried out by center-to-center grinding with capacities of Dia 520 x 3000 mm up to 500 kg or by centerless grinding. Polishing improves the surface finishes to a roughness of Ra 0.1.

Revel is able to process both new and used parts thanks to its chemical dechroming facility with a capacity of Dia 300 x 4500 mm up to a limit of 500 kg.

BETWEEN-CENTER GRINDING

REVEL is equipped with several between-center grinding machines able to process parts up to 3000 mm in length and with a maximum weight of 500 kg.

HONING

La société Stad dispose de moyens de rodage pour vos cylindres et pistons jusqu’à des diamètres 100mm et des longueurs de 400mm. Chiffrage uniquement sur la base de plans.

COATING

Coating is an industrial process that involves applying a coating product to a material to give it specific properties. The product generally takes the form of a liquid to facilitate its application. Most materials used in the industrial sector can benefit from this treatment. Coating can be used to protect the surface, stiffen it, or even give it specific technical properties.

Different coating technologies are used depending on the technical context and the materials being worked. Stad and Revel are specialized in the manufacture of coating bars by combining their manufacturing techniques. Currently, three types of products are offered: the smooth bar coated with hard chrome, the Mayer bar (wound wire) with or without hard chrome, and the coated profiled bar with hard chrome. These three products are custom-made to meet the needs of each user.

Applications possibility : 

• Sizer Presses

• Corrugated Coating Presses

• Adhesives for Labels and Tapes

• Glue for Processing and Protective Papers and Films

• Hot Stamp Foils & Wax

• Coating of bonded board panel

• Coating of Technicals Fabrics

• Coating for hygiene products: bandages, etc.

• Design Production Agency