DE2163805A1 - DUESE FOR SPRAYING LIQUIDS, IN PARTICULAR AGGRESSIVE MEDIA - Google Patents

Description

LecNerAppäitatebauKG Stuttgart

Lechler Apparatebau KO D-7000 Stuttgart 1 P.O. Box 882 Your reference your message voAi Our reference date

V / S Sf-ber / AB 4 20.12.71

Nozzle for spraying liquids , especially aggressive media

The invention relates to a nozzle for spraying liquids, particularly aggressive media such as acids, alkalis, pesticides, detergents and the like. Acquaintances, too Nozzles suitable for the aforementioned purpose usually consist of stainless steel «Through this material are used in the manufacture the following disadvantages: - '

Low cutting speeds and, as a result, long Working times, short workshop downtimes, frequent tool changes, large machine downtimes, and as a result short ones

sale

Tool life increased control of bulk and small d-7oooStuttgart 1

P.O. Box 23? Tel (07 11) 2053-1

Series parts. Another disadvantage of the well-known stainless steel telegram address

Lechler us Stuttgart operation nozzles is that the desired, required geometry pear? Stiisliia

"Τ · Ι. (07123) 5001

Telex 07 24 53 07

at the nozzle outlet because of the toughness of the stainless steel at the span consulting office West

D-4680 Gelsenk.-Buer "~. Höltcherstrae · 4

lifting machining only caused by increased effort, fltraS ^ rtOroNWd

D-2000 Hamburg 50

,. Loulsa-Schroeder-Str.

can be achieved by high cutting forces and feed pressures. Tel. (04ii) 385720

. · / Thanks Konleo

'Dresdner Bank AQ

For these reasons, the number of rejects lies with the known Ιϋ ¹

Ιοίίίϋ

Stuttgart No. 205MOO postal checking account

Postal checking account

3098 26/1000 _ _Δη ", _, .-, ₂ - fSSS & SOSL

BAD ORIGINAL stuttean no. «W

th stainless steel nozzles higher than with other materials e.g. brass.

The object of the present invention is to overcome the disadvantages outlined to avoid. To solve the problem, according to the basic idea the invention proposed that the nozzle consists of an easily processable base material and on the entire surface is covered by a hard nickel layer «.

The use of brass as the base material has the following advantages, for example: Fully automatic production process is possible, low tool wear - which is approx. 10 % , control effort approx. 5 % and machine downtimes of approx. IO - 15 % compared to stainless steel processing. In addition, brass results in sharper nozzle edges when machined and thus a good jet behavior of the nozzles. The proportion of rejects with brass nozzles is comparatively much lower.

The resistance of the nozzle to the aggressive sprayed with it Media is guaranteed by the hard nickel layer according to the invention. ^ In this regard, another feature of the invention is characterized in that that the hard nickel layer is reached chemically and without electricity, so the edge effect of the galvanic nickel plating does not occur and the entire surface, holes and cavities with accessibility of the Bath liquid can be hard nickel-plated. The thickness of the hard nickel layer is variable, so that already from layer thicknesses from IO to 15 ^ u corrosion protection and from 20 to 30 £ Li wear protection occurs. Thicker layers can also be achieved if required. From this it follows Another advantage of the hard nickel layer. According to the invention the achievable even build-up of thicker layers is lost

309826/1000

BAD OWGIlslAL

Used extensively, nozzles with small outlet cross-sections are cheaper to manufacture in larger dimensions and by the Bescli ichttini.i die To reduce the outlet cross-sections.

Another advantage of chemical hard nickel plating is its hardness the layer of RC = 65. The hardness can be increased by heat treatment Re =? 70 increase. This means that the surface hardness is above the achievable Values of comparable hardenable stainless steel and steel grades.

Despite its high intrinsic hardness, the metallic nickel layer remains up to the tear point of the base material adhere to it and does not flake off. Furthermore, with layer thicknesses over 10 Λ.1 there are microscopically no pores more noticeable. Thus, the base material is against aggressive media protected .. Since the layer is non-toxic and does not destroy vitamins, know the nozzle according to the invention also in food production be used.

As a restriction on the use of hard nickel-plated nozzles vi-rd <iio upper Orenzo called the heat resistance of 100 ° C.

Entrepreneurship is primarily thought of as a sense of work. However, it is within the scope of the invention, if necessary Nozzles made of other basic materials with a chemical chronicle Hard coating to be coated. As an insulating material, e.g. Consideration:

Steel, cast iron, copper

Ceramic)

)
Plastic) in a certain composition

Aluminum)

309826/1000 BAD

Claims (4)

Claims ι 2183805 1. Nozzle for spraying * liquids, particularly aggressive ones Media such as acids, alkalis »pesticides, detergents And the like., characterized in that the same consists of a base material that can be easily processed and one on all sides - hard nickel layer is coated " 2. Nozzle according to claim 1, characterized in that the same the entire surface is chemically hard-coated. 3. Nozzle according to claim 2, characterized in that the hard No disgusting layer after it has been applied to the nozzle surface causes it to reach a surface hardness that is greater than Rc = b ^r x on all sides. 4. piise according to one or more of the preceding claims, characterized marked that with the SchichtEtäi * ke iVü cuts can be changed and varied. BATH ORIGINAL 3Ü9826 / 1Q0Q