CH360272A - Manufacturing process of endless steel wire mesh for paper machine - Google Patents
Manufacturing process of endless steel wire mesh for paper machineInfo
- Publication number
- CH360272A CH360272A CH360272DA CH360272A CH 360272 A CH360272 A CH 360272A CH 360272D A CH360272D A CH 360272DA CH 360272 A CH360272 A CH 360272A
- Authority
- CH
- Switzerland
- Prior art keywords
- paper machine
- wire mesh
- steel wire
- manufacturing process
- endless steel
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/04—Hardening by cooling below 0 degrees Celsius
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/10—Wire-cloths
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
Description
Procédé de fabrication d'une toile métallique sans fin en acier pour machine à papier La présente invention a pour objet un procédé de fabrication d'une toile métallique sans fin en acier pour machine à papier telle que les machines du type Fourdrinier. L'invention vise à obtenir une toile qui résiste mieux à l'usure, aux détériorations et au fissurage par fatigue que les toiles métalliques utili sées précédemment.
Jusqu'ici, les toiles métalliques pour machine à papier ont été tissées en fil d'alliages tels que. le bronze phosphoré et le laiton, qui ont été adoptés en raison de leur faible vitesse de fatigue par écrouis- sage et en raison de leur résistance à l'abrasion.
Ces toiles sont toutefois très exposées aux dété riorations et déformations accidentelles qui les ren dent inutilisables ou qui réduisent considérablement leur durée de service.
On emploie de la toile d'acier inoxydable pour la fabrication du papier, mais comme, sous forme de bande sans fin, elle :s'écrouit rapidement lors qu'elle est soumise à des flexions répétées sur une machine à papier du type Fourdrinier, son emploi est limité aux filtres où elle est statique par rapport à la machine sur laquelle elle est montée.
Le procédé selon l'invention est caractérisé en ce que la toile, après tissage, est soumise à un trai tement de réfrigération provoquant la transforma tion de la structure austénitique de l'acier en struc ture martensitique.
Pour que la transformation de l'acier de la toile soit complète, on opère d'ordinaire à une tempéra- ture de -78oC ou inférieure, en faisant passer la toile métallique dans une chambre réfrigérante ou dans un bain d'un milieu à basse température, tel que de l'alcool ou de l'acétone dans lequel de l'anhydride carbonique solide est présent.
Ce traitement transforme l'alliage d'acier austé nitique en un alliage martensitique de trempe dure non susceptible d'un écrouissage rapide dans une machine à papier.
Les toiles métalliques obtenues peuvent fonctionner sur une machine à papier avec des flexions répétées sans se fissurer par fatigue, et sont en outre très résistantes aux déformations acci- dentelles auxquelles les toiles de machine à papier en bronze ou en bronze et laiton sont très exposées.
Method of manufacturing an endless steel wire mesh for a paper machine The present invention relates to a method of manufacturing an endless steel wire mesh for a paper machine such as machines of the Fourdrinier type. The invention aims to obtain a fabric which is more resistant to wear, deterioration and fatigue cracking than the metal fabrics used previously.
Heretofore, paper machine wire fabrics have been woven from wire of alloys such as. phosphor bronze and brass, which were adopted because of their low rate of strain hardening fatigue and because of their abrasion resistance.
These fabrics are, however, very exposed to accidental deterioration and deformation which renders them unusable or which considerably reduces their service life.
Stainless steel wire mesh is used for the manufacture of paper, but as, in the form of an endless belt, it: hardens quickly when subjected to repeated bending on a paper machine of the Fourdrinier type, its use is limited to filters where it is static with respect to the machine on which it is mounted.
The process according to the invention is characterized in that the fabric, after weaving, is subjected to a refrigeration treatment causing the transformation of the austenitic structure of the steel into a martensitic structure.
In order to complete the transformation of the steel in the wire mesh, it is usually carried out at a temperature of -78oC or lower, passing the wire mesh through a cooling chamber or a bath of medium to low. temperature, such as alcohol or acetone in which solid carbon dioxide is present.
This treatment transforms the nitic austic steel alloy into a hard-tempered martensitic alloy not susceptible to rapid strain hardening in a paper machine.
The resulting wire cloths can operate on a paper machine with repeated flexing without cracking by fatigue, and are furthermore very resistant to accidental deformations to which bronze or bronze and brass paper machine cloths are highly exposed.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH360272T | 1959-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH360272A true CH360272A (en) | 1962-02-15 |
Family
ID=4512551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH360272D CH360272A (en) | 1959-09-22 | 1959-09-22 | Manufacturing process of endless steel wire mesh for paper machine |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH360272A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002059408A2 (en) * | 2001-01-25 | 2002-08-01 | Southwestern Wire Cloth, Inc. | Woven screen mesh for filtering solid articles and method of producing same |
-
1959
- 1959-09-22 CH CH360272D patent/CH360272A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002059408A2 (en) * | 2001-01-25 | 2002-08-01 | Southwestern Wire Cloth, Inc. | Woven screen mesh for filtering solid articles and method of producing same |
WO2002059408A3 (en) * | 2001-01-25 | 2003-10-30 | Southwestern Wire Cloth Inc | Woven screen mesh for filtering solid articles and method of producing same |
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