From: TGAsia [mailto:[log in to unmask]]
On Behalf Of Tan Geok Ang
Sent: Wednesday, January 21, 2009 9:09 AM
To:[log in to unmask]
Subject: Re: [TGAsia] dross short
Perform an overhaul in you
wave soldering machine as there is lots of dross within your solder-pot/pump.
You wave height (pump height setting) might also pump dross within the
solder-pot.
From: TGAsia [mailto:[log in to unmask]]
On Behalf Of Yang Zejun
Sent: Wednesday, 21 January 2009 9:02 AM
To:[log in to unmask]
Subject: [TGAsia] dross short
James Liu 刘春光
Director, Technology & Standardization 技术与标准总监
IPC China
上海市长宁区延安西路1088号2303室
Suite 2303，#1088 West Yan'an Rd., Changning, Shanghai 200052 PRC
Tel: +86 21 5497 3435
Fax: +86 21 5497 3437
MP: +86 136 0133 3491 [log in to unmask]<mailto:[log in to unmask]>
www.ipc.org.cn<http://www.ipc.org.cn>
________________________________
发件人: TGAsia [[log in to unmask]] 代表 Yang Zejun [[log in to unmask]]
发送时间: 2009年1月20日 11:37
收件人: [log in to unmask]
主题: Re: [TGAsia] 答复: [TGAsia] 关于检验光的要求 ！
大家好，我想请问一下锡丝短路怎么处理啊？很细很细的那种。
Zejun Yang | ME| APC-MGE Critical Power and Cooling Services Division,
Schneider Electric.
No. 1678 Jixian Road, Tongan District, Xiamen, China 361100 *: Zejun
[log in to unmask]
(Tel) +86 592 757 2775 | (Mobile) +86 15980782161| (Fax) +86 592 757 2899
IPC-610D 和IPC-620A中前言部分有要求：
1.16 Visual Inspection
1.16.1 Lighting Illumination at the surface of workstations should be 1000
lm/m2 minimum. 1,000 lm/m 2 at the work surface is the accepted practice
for the minimum level of illumination in which operators and inspectors
should be expected to perform their tasks. 1,000 lm/m 2 is approximately
equivalent to 100 foot-candles measured using a photographic light meter.
1.16.2 Magnification Aids and Lighting When required, magnification power
for assembly inspection shall1 be at least the minimum inspection power
specified in Table 1-2. Other magnification powers within the inspection
range may be used. The magnification power requirement is based on the
gauge of the wire being inspected. For assemblies with mixed wire sizes,
the greater magnification may be used for the entire assembly. If the presence
of a defect cannot be determined at the inspection power, the item is acceptable.
The referee magnification power is intended for use only after a defect
has been determined but is not completely identifiable at the inspection
power.
The tolerance for magnification aids is ± 15% of the selected magnification
power. Magnification aids should be maintained and calibrated as appropriate
(see IPC-OI-645). Supplemental lighting may be necessary to assist in visual
assessment.
Table 1-2 Magnification Aids1
Wire Size AWG
Diameter mm [inch]
Magnification Power
Inspection
Range
Maximum Referee
larger than 14 AWG
2 mm [0.081 in]
N/A
1.75X
14 to 22 AWG
1.6 - 0.63 mm [0.064 to 0.025 in]
1.5X - 3X
4X
smaller than 22 AWG
<0.63mm [<0.025]
3 – 7.5X
10X
Note 1: Referee magnification power is to be used only to verify a product
rejected at the inspection magnification. For assemblies with mixed wire
size, the greater magnification may be (but is not required to be) used
for the entire assembly.
Best Regards,
Mike Ning
Sanbor Xiamen Manufacturing, Inc.
3/4F, 47 South Haijingnan 2nd Rd, Haicang , Xiamen AEPZ, China.
Post: 361026
Tel :+86-592-5099000 ext 8305
Fax:+86-592-5099343
www.sanbor.com
________________________________
发件人: TGAsia [mailto:[log in to unmask]] 代表 WTSZ-Anny Zhou
发送时间: 2009年1月20日 11:08
收件人: [log in to unmask]
主题: [TGAsia] 关于检验光的要求！
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