SU619338A1 - Method of improving acoustic properties of wood - Google Patents

Method of improving acoustic properties of wood

Info

Publication number
SU619338A1
SU619338A1 SU762413988A SU2413988A SU619338A1 SU 619338 A1 SU619338 A1 SU 619338A1 SU 762413988 A SU762413988 A SU 762413988A SU 2413988 A SU2413988 A SU 2413988A SU 619338 A1 SU619338 A1 SU 619338A1
Authority
SU
USSR - Soviet Union
Prior art keywords
wood
acoustic properties
improving acoustic
improving
increase
Prior art date
Application number
SU762413988A
Other languages
Russian (ru)
Inventor
Иван Степанович Винтонив
Степан Степанович Мергель
Ефим Аврамович Шибрик
Original Assignee
Львовский Лесотехнический Институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Львовский Лесотехнический Институт filed Critical Львовский Лесотехнический Институт
Priority to SU762413988A priority Critical patent/SU619338A1/en
Application granted granted Critical
Publication of SU619338A1 publication Critical patent/SU619338A1/en

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  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

Изобретение относитс  к изготовле :Н1Ш сводов дек и доньев из древесины смычковых и щипковых инструментов и моокет быть использовано в деревообра батывающей прокклиленности. Известей способ улучшени  акустических свойств древесины путем воздействи  на нее пол  токов высокой частотыf 1 . Недостатком этого способ  вл етс  разрушение структуры древе .свны в ранней зоне годичных слоев, .что приводит к понижению жесткости и нepaвн «epнo 4y повышению акустически свойств по всему объему древесины и снижает константу излучени . Известен также способ улучшени  акустических свойств древесины путем ;экстрагировани  ее в жидком аммиаке с последующим прессованием и сушкой Г2Д, Недостатком известного способа  вл етс  также низка  крнстанта излучени . Цель изобретени  - повышение константы излучени . Поставленна  цель достнгаетс  тем что зкстрагирование осу1цествл вот в зфнре в течение 4-6 ч, а сушку воздухом при и влажности 65% до конечной влажности древесины 6-8%. В процессе такой обработки нэ древесины удалшотс  экстрактивные во ества , она становитс  легче пошшаетс  жесткость, происходит ускоренна  искусственна  выдержка древесины при сохранений ранней и поздней зоны годичных слоев, что позвол ет достичь равномерного повышени  акустических характеристик по всему объему древесины . Обработанные заготовки из резонансовой древеси{ш имели следующие показатели , приведенные в таблице.The invention relates to the manufacture of: H1SH arches of decks and bottoms from wood of bowed and plucked instruments and mokets to be used in woodworking woodworking. Lime is a way to improve the acoustic properties of wood by influencing high frequency polyskii f 1. The disadvantage of this method is the destruction of the tree structure in the early zone of the annual layers, which leads to a decrease in stiffness and an uneven 4y increase in the acoustic properties throughout the whole volume of wood and reduces the radiation constant. There is also known a method for improving the acoustic properties of wood by extracting it in liquid ammonia, followed by pressing and drying G2D. A disadvantage of this method is also the low radiation constant. The purpose of the invention is to increase the radiation constant. The goal is achieved by the fact that the extraction of substances takes place here in zfnre within 4-6 hours, and the drying with air at 65% humidity to the final moisture content of wood is 6-8%. In the course of such processing of ne wood, it removes extractive substances, it becomes easier to fix stiffness, accelerated artificial aging of wood occurs while preserving the early and late zones of annual layers, which makes it possible to achieve a uniform increase in acoustic characteristics throughout the wood volume. The processed blanks from the resonant wood {w had the following indicators given in the table.

Claims (1)

1.Автореферат канд. диссертации Макаровой Т.Д. Исследование акустических характеристик древесины, используемой дл  музыкальных инструментов и разработка методов их контрол  в услови х производства, М., 1975,1. Abstract of Cand. dissertations Makarova TD Investigation of the acoustic characteristics of wood used for musical instruments and the development of methods for their control under production conditions, M., 1975, 2,Автбрское свидетельство 206077 1КЛ. В 27 К 3/08, 1Э65.2, Authorship Certificate 206077 1KL. B 27 K 3/08, 1E65.
SU762413988A 1976-10-25 1976-10-25 Method of improving acoustic properties of wood SU619338A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU762413988A SU619338A1 (en) 1976-10-25 1976-10-25 Method of improving acoustic properties of wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU762413988A SU619338A1 (en) 1976-10-25 1976-10-25 Method of improving acoustic properties of wood

Publications (1)

Publication Number Publication Date
SU619338A1 true SU619338A1 (en) 1978-08-15

Family

ID=20680560

Family Applications (1)

Application Number Title Priority Date Filing Date
SU762413988A SU619338A1 (en) 1976-10-25 1976-10-25 Method of improving acoustic properties of wood

Country Status (1)

Country Link
SU (1) SU619338A1 (en)

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