CS239832B1 - Ways of welding small parts chemico-thermal or heat treated to high hardness - Google Patents
Ways of welding small parts chemico-thermal or heat treated to high hardness Download PDFInfo
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- CS239832B1 CS239832B1 CS844156A CS415684A CS239832B1 CS 239832 B1 CS239832 B1 CS 239832B1 CS 844156 A CS844156 A CS 844156A CS 415684 A CS415684 A CS 415684A CS 239832 B1 CS239832 B1 CS 239832B1
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Abstract
Vynález sa týká sposobu zvárania malých súčiastok chemicko-tepelne alebo tepelne spracovaných na vysokú tvrdost, ktorý umožňuje ich. zvarenie bez ovplyvnenia tvrdosti ich fumkčnej plochy a bez deformácie týchtO' súčiastok. Pri tomto sposobe sa použije prievarkového zvárania v CO2 zváracím prúdom v, rozsahu 100 až 180 A za dobu od 2 do 10 sec., za intenzívneho odvodu tepla tak, aby na funkčnom povrchu súčiastky nepřekročila teplota 100 °C.The invention relates to a method of welding small components chemically-thermally or thermally treated to high hardness, which allows them to be welded without affecting the hardness of their functional surface and without deformation of these components. In this method, penetration welding is used in CO2 with a welding current in the range of 100 to 180 A for a period of 2 to 10 seconds, with intensive heat removal so that the temperature on the functional surface of the component does not exceed 100 °C.
Description
Vynález sa týká'spósobu zvárania malých súčiastok chemicko-tepelne alebo tepelne spracovaných na vysokú tvrdost, ktorý umožňuje ich zvarenie bez ovplyvnenia tvrdosti ich funkčnej plochy bez deformácie týchto· súčiastok.The invention relates to a method of welding small components chemically thermally or thermally processed to high hardness, which allows them to be welded without affecting the hardness of their functional area without deforming the components.
Doteraz známy sposob zvárania takýchto súčiastok je metoda TIG v ochrannej atmosféře argonu is přidáním potřebného detailu pre vyplnenie tvaru zvarového spoja s převýšením. Nevýhodou tejto metody zvárania je vysoká prácnosť, nakoíko táto metoda si vyžaduje vyrobit a použiť přídavný detail. Kvalita zvarového spoja dosahuje nízké pevnostně vlastnosti a pomalý režim zvárania znižuje tvrdost funkčnej plochy súčiastky, pričom zvárané súčiastky sa ešte deformujú. Cena ochranného plynu argóinu je vysoká.The known method of welding such components is the TIG method in a protective atmosphere of argon with the addition of the necessary detail to fill the shape of the welded joint with a cant. The disadvantage of this welding method is its high labor intensity, since this method requires the production and use of additional detail. The quality of the welded joint achieves low strength properties and the slow welding mode reduces the hardness of the functional surface of the component, while the welded components still deform. The cost of argon shielding gas is high.
Uvedené nedostatky odstraňuje spósob zvárania malých súčiastok chemicko-tepelne alebo tepelne spracovaných na vysokú tvrdost pri použití prievarkového zvárania v COs podía vynálezu, ktorého podstata spočívá v tom, že sa zvára zváraeím prúdom v rozsahu od 100 až 180 A za dobu od 2 do 10 sec., pri intenzívnom odvode tepla z funkčného povrchu súčiastky tak, aby teplota na tejto ploché nepřekročila 100 C'C.The above drawbacks are eliminated by the method of welding small parts chemically or thermally treated to high hardness using the welding process in CO 2 according to the invention, which consists in welding with welding in the range from 100 to 180 A for 2 to 10 sec. ., in the case of intensive heat removal from the functional surface of the component so that the temperature on this flat does not exceed 100 ° C.
Výhodou spósobu zvárania malých súčiastok podlá vynálezu je, že sa dosiahne kvalitného zvarového spoja bez ovplyvnenia tvrdosti funkčných plóch a bez deformácie týchto zváraných súčiastok.An advantage of the method of welding small parts according to the invention is that a high-quality weld joint is achieved without affecting the hardness of the functional surfaces and without deforming the welded parts.
Ako příklad spósobu zvárania podía vynálezu možno uviest zváranie čapu s tiahlom, pričom čap je nitrocementovaný a kalený. V ocelovom tiahle o hrúbke 3 mm je vytvořený otvor, do Jktorého je nasunutý čap v dížke 2,5 mm. Cap sa upne v přípravku, ktorý zabezpečí správnu polohu voči ocelovému tiahlu, t. j. kolmost a hlavně tento prípravok odvádza teplo pri zváraní čapu. Potom sa na čele čapu, ktoré je v rovině s tiahlom, vytvoří prievarkový zvar v CO2 pri použití zváracieho prúdu 150 A za dobu 4 sec. pri intenzívnom odvode tepla s rýchlosťou tepelného spádu 1 500 °C/0,5 až 1 minútu. Teda v tomto konkrétnem případe čap ustavený v tiahle je zovretý čelusťami přípravku, ktoré odvádzajú teplo dodané v oblasti čela čapu, ikde je vytvořený zvarový spoj tak, aby nenastalo popustenie ostatnej funkčnej plochy čapu, ktorá je v nitrocementovom a kalenom stave.An example of a welding method according to the invention is a pin-to-pin welding, wherein the pin is nitrocemented and hardened. In a steel rod of 3 mm thickness, a hole is formed, into which a bolt of 2.5 mm length is inserted. The cap is clamped in a jig that will secure the correct position relative to the steel rod, i. j. perpendicularity and above all this preparation dissipates heat when welding the pin. Then, a pintle weld in CO 2 is formed at the pivot face, which is flush with the drawbar, using a welding current of 150 A for 4 seconds. with intensive heat dissipation with a thermal gradient of 1500 ° C / 0.5 to 1 minute. Thus, in this particular case, the pin in the rod is clamped by the jaws of the jig that dissipate the heat supplied in the region of the pin face even when the weld joint is formed so as not to release the other functional pin surface which is in nitrocement and hardened condition.
Zvýšenie účinnosti odvodu tepla prostredníctvom čelustí přípravku je realizované prietoikom chladiaceho média cez chladiace otvory vytvořené v čelustiach přípravku. Popuštěná zóna ovplyvnená zvarom představuje cca 0,5 až 1 mm funkčnej dížky čapu od oblasti tiahla.The increase in heat dissipation efficiency through the jaws of the jig is realized by the flow of cooling medium through the cooling holes formed in the jaws of the jig. The tempered zone affected by the weld is approximately 0.5 to 1 mm of the functional length of the pin from the drawbar area.
Teplota zváraných súčiastok v mieste zv.arcivého spoja je tavná, t. j. nad 1 500 °C a v mieste funlkčnom, t. j. vo vzdialenosti 0,5 až 1 mm od tiahla až do konca čapu neprestúpi teplota ÍOO ’C vzhladom k požiadavkám na kvalitu nitrocementovanej a kalenej funkčnej plochy čapu. Uvedené hodnoty sú optimálně pre 0 čapu 8 mm a hrůbku tiahla 3 mm.The temperature of the welded parts at the welding joint is fusible, i. j. above 1500 ° C and at a functional site, i. j. at a distance of 0.5 to 1 mm from the rod to the end of the pin, the temperature of 100 ° C will not exceed the quality requirements of the nitrocemented and hardened pin functional surface. The indicated values are optimally for a 8 mm pin and a 3 mm drawbar depth.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS844156A CS239832B1 (en) | 1984-06-04 | 1984-06-04 | Ways of welding small parts chemico-thermal or heat treated to high hardness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS844156A CS239832B1 (en) | 1984-06-04 | 1984-06-04 | Ways of welding small parts chemico-thermal or heat treated to high hardness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS415684A1 CS415684A1 (en) | 1985-06-13 |
| CS239832B1 true CS239832B1 (en) | 1986-01-16 |
Family
ID=5383674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS844156A CS239832B1 (en) | 1984-06-04 | 1984-06-04 | Ways of welding small parts chemico-thermal or heat treated to high hardness |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS239832B1 (en) |
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1984
- 1984-06-04 CS CS844156A patent/CS239832B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS415684A1 (en) | 1985-06-13 |
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