发明名称 |
Method for stretching a glass rod |
摘要 |
Control over the diameter variations in a glass rod (10) during the stretching thereof is accomplished by cooling the rod after heating and initial neck down of a portion (22) thereof. After cooling, the rod (10) is reheated, at a lower temperature sufficient to reflow the glass in the necked-down portion (22) thereof, and is then stretched to the desired final diameter. Heating the rod (10) at a lower temperature during stretching increases the viscosity thereof which reduces its response to the stretching conditions, thereby affording better control over diameter fluctuations.
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申请公布号 |
US4578101(A) |
申请公布日期 |
1986.03.25 |
申请号 |
US19840654600 |
申请日期 |
1984.09.26 |
申请人 |
AT&T TECHNOLOGIES, INC. |
发明人 |
CLARK, HAROLD R.;NICOL, DAVID A. |
分类号 |
C03B23/047;C03B37/012;(IPC1-7):C03B23/04 |
主分类号 |
C03B23/047 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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