| 摘要 |
A method for providing a controlled heating profile in an article being heated in a resistance heating process is provided. The method includes contacting the article with a plurality of electrodes, selecting a first correlated group that includes at least two electrodes, and establishing a flow of electrical current between the electrodes of the first correlated group. The method also includes selecting a second correlated group that includes at least two electrodes, the second correlated group differing from the first correlated group. A flow of electrical current is also established between the electrodes of the second correlated group for the purpose of providing a controlled heating profile for an article undergoing resistance heating. The electrical current between the electrodes of the second correlated group can be established after the flow of electrical current is established between the electrodes of the first correlated group. In addition, the flow of electrical current between the electrodes of the first correlated group can be terminated before the flow of the electrical current is established between the electrodes of the second correlated group. The method can also include the further step of selecting a third correlated group comprised of at least two of the said plurality of electrodes and establishing a flow of electrical current between the electrodes of the third correlated group. A step of controlling at least one sequence, duration, and magnitude of current flow between the electrodes of the various correlated groups can be included. In addition, the flow of current between the electrodes of the various correlated groups can be controlled by a preselected program. The flow of current can also be controlled by a response to a measured parameter of the article, for example the temperature and/or electrical resistance of the article. ® KIPO & WIPO 2009
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