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  • 在線留言|聯系青島琴行|收藏青島琴行|網站地圖登錄注冊

    買鋼琴歡迎進入青島琴行官方網站!

    青島正一琴行

    歐洲品牌鋼琴銷售中心

    咨詢服務熱線:400-176-9871

    您的當前位置:首頁 ->常見咨詢

    鋼琴制造中的數據

    返回列表 來源:正一琴行 查看手機網址
    掃一掃!鋼琴制造中的數據掃一掃!
    瀏覽:- 發布日期:2018-03-14 11:27:40【

    弦軸孔的鉆制:

    鉆頭鉆入的速度為每分鐘3米,弦軸孔鉆進深度為40mm。與弦軸板的表面形成8°到10°的角度。

    肋木:

    肋木的數量立式琴9-11根,演奏會用大三角鋼琴是17根。

    肋木相互之間的距離是在90-140毫米之間。

    肋木通常寬20-24毫米左右(音樂會三角琴達30毫米),高15-23毫米。

    琴弦:

    琴弦在與弦枕間的部分曲折角度通常為15-20°

    弦在弦馬上的曲折角度是從0.5°-2°,只是在個別的情況下,某些弦才達到4°。

    琴弦在弦枕的曲折角度為15°,如果超過這個角度,不但沒有意義,而且還是有害的,因為這將增加調音的困難和斷弦的可能性。

    音板:

    音板的尺寸從立式鋼琴的1000×1400毫米到三角鋼琴的1400×2300毫米。音板的的厚度在8-11毫米范圍內。

    一些三角鋼琴音板中間部分的厚度是9-10毫米,而到周邊減薄到7毫米。這樣的音板增加了它的彈性應力,有利于振動。

    弦馬:

    有寬大支撐面的弦馬能增長音的持久性,但是會降低響度,縮小支撐面就會增強響度。

    低音弦馬要比高音弦馬高出30-35毫米。

    在作弦列的平面布置時,為了保持低音弦應有的長度,不得不把低音弦馬放在靠近音板邊緣的位置,但是把弦馬放的過于靠近音板邊上,會使音板的振動變壞,振動點離音板堅固的框架越近,音板復發低頻就越差。

    音板結構因素對音質的影響:

    響度:   增強響度1,加大音板的彈性;2,減少共振板的厚度;3,增加穩固音板邊緣的堅牢性;4,加大音板的面積;5,使用高而窄的弦馬;6,把弦馬的兩頭安置在肋木的上面。

    發音持久力:   減小是由于:1,音板或其組成部分的整個質量增大;2,音板邊緣穩固的不牢固;3,音板的彈性減小;4,音板的框架不夠厚重;5,音板上有明顯的膠拼縫;6,弦馬與弦接觸的支撐面過小。

    鐵板:

    鑄鐵的正常化學成分為:碳—2.5%,硅—3%,硫—不超過0.1%,錳—不超過0.5%,磷—不超過0.95%,布氏硬度200-207公斤/m㎡

    立式鋼琴鐵架的重量在60-80公斤。三角鋼琴為95-150公斤,演奏會三角鋼琴為200公斤。


    拉菲2彩票
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