CS257128B1 - Binder for powder coating mixtures of electrodes for manual welding - Google Patents
Binder for powder coating mixtures of electrodes for manual welding Download PDFInfo
- Publication number
- CS257128B1 CS257128B1 CS863858A CS385886A CS257128B1 CS 257128 B1 CS257128 B1 CS 257128B1 CS 863858 A CS863858 A CS 863858A CS 385886 A CS385886 A CS 385886A CS 257128 B1 CS257128 B1 CS 257128B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- binder
- electrodes
- powder coating
- electrode
- manual welding
- Prior art date
Links
- 239000011230 binding agent Substances 0.000 title claims abstract description 15
- 238000003466 welding Methods 0.000 title claims abstract description 12
- 239000000203 mixture Substances 0.000 title claims abstract description 9
- 239000000843 powder Substances 0.000 title claims abstract description 6
- 239000011248 coating agent Substances 0.000 title abstract description 5
- 238000000576 coating method Methods 0.000 title abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 6
- 239000008199 coating composition Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000001035 drying Methods 0.000 abstract description 2
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 235000019353 potassium silicate Nutrition 0.000 description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
Spojivo práškových obalových zroesí elektród pre ručně oblúkové zváraníe podlá vynálezu odstraňuje doterajsie ťažkosti používaných spojiv zmersí obalených elektród na báze sodnodraselného vodného skia pri ich sušení. Požostáva z vodného roztoku polyvinyhalkoholu, ktorý sa přidává v množstve 5 až 15 °/o hmot. obalovej zmesi.Binder of electrode powder coating for manual arc welding according to of the invention eliminates the hitherto difficulties of used binders will mix coated electrodes based on sodium potassium water drying. It comes from water polyvinyl alcohol solution to be added 5 to 15% by weight. packing mixture.
Description
Vynález sa týká spojiva práškových obalových zmesí elektrod pre ručné oblúkové zváranie.The invention relates to a binder of powder coating compositions of electrodes for manual arc welding.
Ako spojivo práškových obalových zmesí elektrod sa doteraz všeobecne používá vodné sklo sodné, draselné alebo zmiešané sodnodraselné. Vo svojom zložení obsahuje značné množstvo vody, či už voínej alebo kryštalickej, ktorú vnáša do obalu elektród. Táto sa odstraňuje z obalu elektród sušením pri teplete cca 200 °C s následným vypalováním elektróá pri teplote cca 350 až 400 °C. Takmer celé množstvo vody z vodného skla sa pri týchto teplotách odstráni, avšak v obale vznikajú póry a trhliny, ktoré sú miestami adsorbovania atmosférické j vlhkosti/Voda a vlhkost v obale elektrody spOsobuje zvýšenie obsahu difúzneho vodíka vo zvarovom kove, čo má za následok vodíkové křehkost' zvaru, praskanie zvaru v koření a podobné. Navlhavosť obalov elektród je velmi vážný problém a je vo velkej miere sposobená přítomnostem vodného skla. Obalené elektrody sa preto musia ešte před použitím znovu presušit pri teplote 200 °C v trvaní minimálně 1 hodinu, čo z hladiska ekonomického, ale často aj praktického nie je vhodné.Sodium, potassium or mixed sodium potassium water glass has generally been used as a binder of the powder coating compositions of the electrodes. In its composition it contains a considerable amount of water, whether free or crystalline, which it brings into the electrode sheath. This is removed from the electrode sheath by drying at a temperature of about 200 ° C followed by firing of the electron at a temperature of about 350 to 400 ° C. Almost all of the waterglass water is removed at these temperatures, but pores and cracks are formed in the casing which are atmospheric moisture adsorption sites. weld, cracking weld in spices and the like. The wetness of the electrode shells is a very serious problem and is largely caused by the presence of water glass. The coated electrodes must therefore be re-dried at 200 ° C for at least 1 hour before use, which is not appropriate from an economic, but often practical, point of view.
Tieto nevýhody do značnej miery odstraňuje spojivo podlá vynálezu, ktorého podstata spočívá v tom, že je tvořené vodným roztokom polyvinylalkoholu v množštve 5 až 15 % hmot. obalovej zmesí.These drawbacks are largely eliminated by the binder according to the invention, which consists in that it consists of an aqueous solution of polyvinyl alcohol in an amount of 5 to 15% by weight. packaging mixtures.
Použitím nového spojiva práškových obalených zmesí elektród sa získajú následovně výhody: navlhavosť obalených elektród sa zníži přibližné dvojnásobné oproti elektrodám s použitím vodného skla ako spojiva obalených zmesí elektród. Ďalej sa zlepšia operativně zváracie vlastnosti elektród s použitím nového spojiva najma z hladiska kludného horenia oblúka, jemnejšej kresby húsenky a velmi 1'ahkej odstránitel'nosti trosky. Z ekonomického hladiska výhodou je to, že elektródy sa sušia pri nižsej teplote 150—200 °C po dobu 2 hodin. Z hladiska hygieny vlastnosti elektród, ako aj pri spatnom ručnom oblúkovom zváraní sú rovnaké ako elektródy s použitím vodného skla ako spojiva.The use of a new binder of powder coated electrode mixes provides the following advantages: the wettability of the coated electrode is reduced approximately twice as much as the electrodes using water glass as the binder of the coated electrode mixes. Furthermore, the operative welding properties of the electrodes are improved with the use of a new binder, in particular in terms of arc calm burn, finer bead texture and very easy slag removability. From an economic point of view, the advantage is that the electrodes are dried at a lower temperature of 150-200 ° C for 2 hours. In terms of hygiene, the properties of the electrodes, as well as in the case of manual arc welding, are the same as those using waterglass as a binder.
Na nasledujúcich príkladoch je osvětlená podstata vynálezu. Pri výrobě obalovej zmesí bázlckej elektródy pre ručné oblúkové zváranie bol ako spojivo použitý vodný roztok polyvinylalkoholu v množštve 6,5 pere. hmot. obalovej zmesi elektród. Elektródy po vyrobení z obalu podlá vynálezu sa následné sušili po dobu 2 hodin pri teplote 170 °C. Vysušené elektródy holi vystavené prostrediu o 84 % relatívnej vlhkosti počas 5 hodin v navlhávacích komorách. Prírastok vlhkosti obalu elektród vzhíadom na jeho hmotnost vo vysušenom stave uvádzaný v % bol 0,492 % hmot., žati! čo u elektródy s použitím vodného skla ako spojiva- obalových zmesí elektród bol 0,9845 % hmot.The following examples illustrate the invention. In the manufacture of the base electrode coating compositions for manual arc welding, an aqueous solution of polyvinyl alcohol in an amount of 6.5 pens was used as a binder. wt. electrode coating mixture. The electrodes made from the inventive packaging were subsequently dried for 2 hours at 170 ° C. The dried electrodes are exposed to an environment of 84% relative humidity for 5 hours in the humidification chambers. The moisture increment of the electrode sheath with respect to its dry weight stated in% was 0.492% by weight. in the case of an electrode using water glass as binder-electrode coating mixtures, 0.9845 wt.
V ďalšom případe bolo spojivo podlá vynálezu použité pri výrobě obalených elektród pre ručné oblúkové zváranie vysokolegovaných CrNi materiálov, kde sa použil vodný roztok polyvinylalkoholu v množštve 14 % hmot. na obalová zmes elektród.In another case, the binder of the invention was used in the manufacture of coated electrodes for manual arc welding of high-alloy CrNi materials using an aqueous solution of polyvinyl alcohol in an amount of 14% by weight. for electrode coating mixture.
Elektródy po vyrobení sa následné sušili pri teplote 170 °C počas 2 hodin. Po vystavení elektród 84 % relatívnej vlhkosti atmosféry počas 5 hodin, elektroda mala prírastok 0,35 % hmot., zatial čo elektroda s použitím vodného skla vykázala prírastok 0,680 % hmot.The electrodes after manufacture were subsequently dried at 170 ° C for 2 hours. After exposure of the electrodes to 84% relative atmospheric humidity for 5 hours, the electrode had an increment of 0.35 wt.%, While the electrode showed an increase of 0.680 wt.
Zváracie elektródy vyrobené so spojivom obalu podlá vynálezu bolí podrobené pádovej skúške podlá ČSN 05 5010 Obalené elektródy na zváranie a naváranie elektrickým oblúkom a v obidvoch prípadoch obal elektródy vyhověl pádovej skúške.Welding electrodes made with the binder of the package according to the invention were subjected to a drop test according to CSN 05 5010 Coated electrodes for arc welding and welding, and in both cases the electrode package passed the drop test.
Vodný roztok polyvinylalkoholu podlá vynálezu je vhodný ako spojivo obalových zmesí elektród pre ručné oblúkové zváranie.The aqueous polyvinyl alcohol solution according to the invention is suitable as a binder for electrode coating compositions for manual arc welding.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS863858A CS257128B1 (en) | 1986-05-26 | 1986-05-26 | Binder for powder coating mixtures of electrodes for manual welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS863858A CS257128B1 (en) | 1986-05-26 | 1986-05-26 | Binder for powder coating mixtures of electrodes for manual welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS385886A1 CS385886A1 (en) | 1987-09-17 |
| CS257128B1 true CS257128B1 (en) | 1988-04-15 |
Family
ID=5379902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS863858A CS257128B1 (en) | 1986-05-26 | 1986-05-26 | Binder for powder coating mixtures of electrodes for manual welding |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS257128B1 (en) |
-
1986
- 1986-05-26 CS CS863858A patent/CS257128B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS385886A1 (en) | 1987-09-17 |
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