レーザ溶接を用いた歯科補綴物の精度

激光焊接假牙的精度

• 批准号: 05771762
• 负责人: 柿本 和俊
• 金额: $ 0.58万
• 依托单位: Osaka Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05771762/
• 关键词: レーザ; 溶接; 歯科補綴物; 精度

レーザ溶接は熱影響部が狭いために,高精度な補綴物の作製を可能とする.しかし,溶接精度は溶込みに影響される.そこで,レーザ照射条件によって溶込み形状を変化させ,照射条件と溶接精度の関係を明らかにした.試料金属は50×3mmで厚さが2.0および0.5mmの純チタン,また,13×8×0.76mmの金銀パラジウム合金とした.純チタン試料には計測点を刻入し,溶接前後の計測点の座標変化を測定して,溶接部の変形を求めた.金銀パラジウム合金試料は,2枚突き合わせて溶接後,2枚の試料の湾曲度を求めた.なお,溶接にはパルスYAGレーザ装置を用い,パルス幅を10ms,照射エネルギーを40J/Pとし,アルゴンガス雰囲気中で溶接した.溶込み形状はおもに焦点はずし距離によって変化させた.また,試料両端の固定の有無についての比較も行った.厚さ2mmの純チタン試料は,レーザ照射した方向に湾曲した.焦点はずし距離が小さくなり,溶込み深さが大きくなると,湾曲度は大きくなり,試料を固定しない場合には最大23mrad湾曲した.さらに焦点はずし距離が小さくなり,溶込みが照射面の裏側に達すると,湾曲度は小さくなった.溶接部の収縮も,焦点はずし距離が小さくなると大きくなり,最大35mumとなった.固定の有無による差はあまりなかった.厚さ0.5mmの試料の湾曲は厚さ2mmの試料よりも大きく,固定しない場合には最大142mrad湾曲した.しかし,厚さ2mmの試料とは逆に焦点はずし距離が小さくなると湾曲度は小さくなった.また,固定した試料はほとんど湾曲しなかった.金銀パラジウム合金の試料は,焦点はずし距離が小さくなると,湾曲度も小さくなったが,溶込みが照射面の裏面に達すると照射した方向と反対側に湾曲した.以上から,高精度の溶接には完全溶込みが重要なこと,薄い部分の接合には強い固定が有効なことが判明した.

It is possible that the high-precision equipment can be used to solve the problem of high precision. The precision of the fusion is very high. The irradiation condition is different from that of the shape, and the irradiation condition is the accuracy of the fusion. The thickness of the metal is 50 × 3mm, the thickness is 2.0mm, the thickness of the 0.5mm alloy is 13 × 8 × 0.76mm, the metal metal is the alloy alloy. The measuring point is engraved in the material, the measuring point is measured before and after the fusion, and the shape of the fusion part is calculated. Metal alloy material, 2 pieces of metal alloy, 2 pieces of metal alloy, 2 pieces of metal, 2 pieces of metal, two pieces of gold, two pieces of gold In this paper, the splicing device is used, the width of the YAG device is 10ms, the radiation intensity is 40J/P, and the splice is in the device. Dissolve the shape, focus, distance, distance, shape, focus, distance, focus, distance, distance and distance. The end of the material is fixed. There is a better line than the other. Thick 2mm material, irradiate the material in the direction of the bay bend. The focus is far away from the small one, the solution is deep, the curvature of the bay is large, and the material is fixed and closed. The largest 23mrad bay curve. The focus is far away from the light, the radiation surface is small, and the curvature of the bay is small. The fusion part has a small distance from each other, the focus is far away from each other, and the maximum 35mum is small. There is something wrong with the fixed number of people. Thick 0.5mm material, thick 2mm material, fixed material, maximum 142mrad bay koji. The thickness of the 2mm is small, the focus is negative, the distance is small, and the curvature of the bay is small. Make sure that the material is fixed, and that the bay song is not safe. The metal alloy material, the focus distance, the bay curvature, the radiation surface, the radiation direction and the direction of the beam, the focus, the distance, the curvature, the surface, the direction, the direction and the direction. Above, high-precision welding, complete dissolving, important bonding, thin bonding, strong fixation, high precision, high precision, high precision,