Utjecaj različitih vrsta modifikacije na izvlačnu silu rotacijski zavarenih moždanika

IF 0.7 4区 农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD
Ivica Župčić, Igor Đukić, Matija Jug, Mario Jurišić, Marin Hasan
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引用次数: 0

Abstract

The increasing use of modified wood justifies the intention to use it in joints made by rotary welding with dowels. Thermal modification, for example, increases the dimensional stability of wood by reducing its hygroscopicity and water absorption, but it is difficult to glue or to rotary weld due to the appearance of cracks. This can be avoided by changing the optimal welding parameters, which on the other hand directly affects the reduction of the pull-out force by more than 25 % depending on the type of the modified base. In the case of welding wooden dowels into wood modified with citric acid, the reduction in pull-out force is even greater. Due to the significant reduction, the use of this type of modification for wood welding is questionable. When citric acid modification is extended to the dowels, the dowel becomes a problem due to its lower tensile strength, which is even lower than the pull-out force of the welded dowel.
不同修饰对旋转障碍提取力的影响
改性木材的使用越来越多,证明了将其用于通过销钉旋转焊接制成的接头的意图是合理的。例如,热改性通过降低木材的吸湿性和吸水性来提高木材的尺寸稳定性,但由于出现裂纹,很难粘合或旋转焊接。这可以通过改变最佳焊接参数来避免,另一方面,根据改性基底的类型,最佳焊接参数直接影响拔出力减少25%以上。在将木榫焊接到用柠檬酸改性的木材中的情况下,拔出力的减小甚至更大。由于显著减少,将这种类型的修改用于木材焊接是值得怀疑的。当柠檬酸改性延伸到榫钉时,榫钉由于其较低的抗拉强度而成为问题,该抗拉强度甚至低于焊接榫钉的拔出力。
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来源期刊
Drvna Industrija
Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
1.80
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.
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