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超声波焊接工艺学习资料

  • 2026-01-13 04:14:08
超声波焊接工艺学习资料
一、超声波焊接介绍

1、什么是超声波

超声波是一种频率(声音)有关,超出了人类听觉范围内的音波,通常在1800020000秒。

超声波熔接是一种高科技,一切热溶性塑料制品皆可应用。

现今,应用超声波技术于塑胶工业生产上已为极为普遍,由于应用此技术可取代传统生上所用的胶水,粘合剂,扣钉,或其它机械固定法。从而提高生产效率及质量,降低成本,故为一般生产商所乐于采用,其应用范围广泛,如汽车业、玩具业、医疗用品业、日用品业等等,比比皆是。

2、超声波焊接的原理:

基本原理是利用换能器系统使用电信号转换为高频机械振动。通过高速热磨擦,令塑胶熔合。按其它方式可分为直接与传导二种熔接方法。

直接熔接:即先使材质如线或带相互重叠,固定于塑胶熔接机类具上,让其能量转换器(HORN)直接在上面产生音波振动效能而熔接

传导熔接:即熔接时,离超声波振动,隔一段距离其音波振动传导熔接

3、特点:

A、可熔接除铁氟龙以外的热可塑性塑胶;

B、熔接时间极为短暂,通常范围0.05-1秒;

C、可经由介质如水、油等熔接于接合面;

D、熔接效果,可达气密,液密封效果;

E、可作直接与传导熔接;

F、熔接能量因塑胶材质而易,而且并非超声波振动全部材质,只选择适合发生的振动面生热,所以

产品表面无伤痕之考虑,此为传导熔接之特色,在较硬的塑胶质熔接时,更能发挥其熔接效果;

G、超声波熔接不会产生如化学药剂之毒性,为一安全的的熔接加工;

H、无须添加任何粘剂,振动简单快捷;

二、塑料特性焊接关系

绝大部分常用的注塑成形合物都可用超声波焊接,但超声塑料焊接的难易与被焊接本身的许多特性有关,塑料的磨擦系数越大,导热性越差,界面越易形成熔融层,其超声焊接越容易,结晶型塑料由于从固态到熔融状态,湿度范围较窄,非常迅速,故焊接性能较差,调整很困难。

软性塑料在铆焊嵌插焊时,其超声焊接的性能比软性塑料容易焊接

目前,各类塑料制品层出不穷,这里将几种常见的塑料的超声焊接性能作简单的介绍:

1ABSHIPSPMMAMPPO:钢性非结晶体材料,极易传导20000HZ的超声频率,因而特别适合焊接,无论远距离或近距离都达到良好的焊接效果;

2PCPSU:材料熔点高,吸湿性强,因而焊接前作烘干处理,否则材料内的湿气会妨碍焊接强度,同时湿气会使焊接地耗能较大,焊接时间长。

3PA:是吸湿性较强的结晶型材料,因而焊接前应烘干。

4PPPE:属于结晶型材料,超声传导时,会有较大的损耗,故远距离焊接困难。

5PVC:是一种熔点质又软的材料,超声能量损耗大,焊接时,极易烧坏焊件表面。

三、焊接故障分析和对策

问题解决方法
焊接不足增加焊接时间
增加振幅(更换增幅器)
增加压力
焊接过量减少焊接时间
减少压力
减少振幅(更换增幅器)
焊件接合面不坚固增加焊接时间
增加保压时间
增加振幅(更换增幅器)
增加压力
焊接后,产品表面损坏
减少振幅
减少焊接时间
增加压力
检查焊接头与增幅器之间的接合面
检查焊头是否出现破裂
检查焊件与被焊件的位置是否适当
检查焊件与底模是否接触
检查底模是否固定
系统出现过荷减少压力
减少振幅(更换增幅器)
调校功率放大器
检查焊关与增幅器的接面
更换大功率焊接机
焊件接合面焊接不均匀
检查焊件的大小(上下是否吻合)
加垫片于底模
重新设计底模或焊头
在焊接进检查焊件有否移动
检查焊件与底是否接触恰当

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  1. CONNECT:[ UseTime:0.000531s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000731s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000251s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000241s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000447s ]
  6. SELECT * FROM `set` [ RunTime:0.000171s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000496s ]
  8. SELECT * FROM `article` WHERE `id` = 459904 LIMIT 1 [ RunTime:0.000382s ]
  9. UPDATE `article` SET `lasttime` = 1768280877 WHERE `id` = 459904 [ RunTime:0.004964s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000215s ]
  11. SELECT * FROM `article` WHERE `id` < 459904 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000362s ]
  12. SELECT * FROM `article` WHERE `id` > 459904 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000326s ]
  13. SELECT * FROM `article` WHERE `id` < 459904 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000668s ]
  14. SELECT * FROM `article` WHERE `id` < 459904 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000485s ]
  15. SELECT * FROM `article` WHERE `id` < 459904 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.005510s ]
0.085985s