GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||
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12:27 Mar 26, 2004 |
Dutch to English translations [Non-PRO] Tech/Engineering - Metallurgy / Casting / batteries | ||||
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| Selected response from: Adam Smith United Kingdom Local time: 21:59 | |||
Grading comment
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Summary of answers provided | ||||
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3 +4 | Soft lead/ hard lead |
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3 +2 | soft lead, hard lead |
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Soft lead/ hard lead Explanation: Soft lead/ hard lead, eg. LEAD ALLOYS There are two general types of lead alloy, “soft lead” (mostly pure lead) and “hard lead” (an alloy of lead and a harder metal.) Pure lead melts at 621 degrees F. and has excellent pouring characteristics at 700-800 degrees. A hard lead alloy may solidify too quickly and require more effort to mold good parts. ref. http://www.do-itmolds.com/tips/lead_alloys.php?UID= -------------------------------------------------- Note added at 2004-03-26 12:35:04 (GMT) -------------------------------------------------- Or \"Antimonial lead\" instead of \"hard lead\", eg. 1. hard lead, antimonial lead -- a lead alloy that contains about 5% antimony 2. hard lead -- unrefined lead that is hard because of the impurities it contains ref. http://www.yourdictionary.net/hard_lead.html -------------------------------------------------- Note added at 2004-03-26 12:36:46 (GMT) -------------------------------------------------- In reference to your question regarding batteries: \"Car, motorcycle, truck, marine, recreational vehicle starting and deep cycle lead-acid batteries are perishable. During the discharge process, soft lead sulfate crystals are formed in the pores and on the surfaces of the positive and negative plates inside a lead-acid battery. When a battery is left in a discharged condition, is continually under charged, or the electrolyte level is below the top of the plates, some of the soft lead sulfate re-crystallizes into hard lead sulfate. \" ref. http://www.optimabattery.freeserve.co.uk/batteryFAQ/storage.... |
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