BLUEPUPIL-2 написа:със специални клещи ненаранаващи медта.Може ли линк?
За това соединение знам, че не се усукват предварително жици, всеки който е запознат, да си каже.
пет ное 22, 2019 8:33 pmgogo7777 написа: Водиме ли в резултата?Водим е меко казано, направо ги разбихме?
съб ное 23, 2019 7:57 pmky-kyy написа: Нямах си на идея, че тука било нещо, като предаването на Бате Енчо "По-по-най" Извинявам се, че се намесих с клипчета, в които нагледно е показано, как е добре, да се правят кабелните връзки. Мислих си наивно, че някой може да се научи на нещо....Ма тва е божи форум бе, ти не знаеш ли? Тука боговете правят свръзки на жици с клеми за по 50лв. бройката на свръзка. Сигурно и по толкова взимат и на свръзка. То нали така работят майсторите - колкото материалите толкова и работата. И понеже знаят, че тука четат бъдещи тъпи клиенти, що да не се направят хем на велики разбирачи, хем да си направят един дъмпинг на цената им за труд, посредством супер скъпите извънземни клеми...
Още веднъж се извинявам, че наруших сбирката на лаиците.
Всъщност, винаги ми е било кеф, да слушам/чета, разни общаци, как се упражняват, в размисли и страсти, по теми, от които и хал-хабер си нямат и си мислят, че стават умни
Успех
съб ное 23, 2019 10:50 pmsokolov.91 написа: Ма тва е божи форум бе, ти не знаеш ли? Тука боговете правят свръзки на жици с клеми за по 50лв. бройката на свръзка. Сигурно и по толкова взимат и на свръзка. То нали така работят майсторите - колкото материалите толкова и работата. И понеже знаят, че тука четат бъдещи тъпи клиенти, що да не се направят хем на велики разбирачи, хем да си направят един дъмпинг на цената им за труд, посредством супер скъпите извънземни клеми...Соколов, тук не си прав. Извънземните връзки ги показа BLUEPUPIL-2, когото много уважавам за мненията му като конструктор, но е много далеч от електротехниката. По самите кабелни връзки, които са приложими домашни условия, в стил "направи сам" бих коментирал следното:
Кво беше... ,,кой го интересува за тия с връзки? Никой! И слава богу.
П.С. КАЗВА СЕ БАЙ НИКОЙ!''
... Смешки...
WORKMANSHIP STANDARD FOR CRIMPING, INTERCONNECTING CABLES, HARNESSES AND WIRING
12. CRIMP CONNECTIONS
12.1 General
12.1.1 Crimped connections shall be inspected 100 percent in order to verify compliance with this standard.
12.1.2 Insulation clearances shall be as specified in paragraph 10.1.4.b.
12.2 Examination of Crimp Contact
12.2.1 For manual crimping operations prior to wire insertion, the assembler shall examine the crimp contacts for the conditions in 12.2.2.
12.2.2 Contacts that show the following conditions shall be prohibited:
a. Cracks in the plating or base metal.
b. Tarnishing or discoloration of the plating.
c. Plating removal or flaking.
d. Out-of-roundness of the wire well entrance.
e. Exposed base metal.
12.3 Process Controls
12.3.1 Tool and Equipment Control.
a. Full-Cycle Ratcheting. Crimp tools shall contain a full-cycle ratcheting mechanism
which shall prevent the indenters from releasing before the crimp cycle has been completed.
b. Number of Indenters. Each crimp tool shall have four or more indenter blades
(preferably double-indenter blades).
c. Calibration Adjustments. The calibration adjustments shall be accessible only when the tool is disassembled.
d. Calibration adjustments shall be made only by the manufacturer of the tool or by a calibration laboratory.
e. Sealing of Adjustable Tools. All adjustable crimp tools shall be set, sealed or locked, and verified prior to use.
12.3.2 Examination of Crimp Tools.
a. If the tool is broken or damaged, it shall be removed from service.
b. Tools with a sealed setting and sealed locator or position. If the tool is broken or
damaged, or if the seal is broken, the tool shall be removed from service.
c. Records of examination shall be maintained for hand tools.
12.3.3 Allowable Contact-Conductor Combinations.
The contact-conductor combinations shall be in accordance with manufacturer's recommendations.
12.3.4 Contacts or conductors shall not be modified.
12.3.5 Integrity of Crimped Connections.
a. The following requirements apply for crimp process development when there is no
recommended tool setting for the contact-conductor combination:
(1) For each new crimp process where a crimp tool setting must be determined for a
contact-conductor pair (or a crimp ferrule-conductor combination), a three-sample pull
test at each of the different crimp tool settings considered for use are required using the force and pull strength criteria in Table 12-1.
(2) The crimp tool setting that produces the maximum number of fray breaks and breaks
outside the contact or crimp ferrule shall be used for assembly (see Figure 12-1).
(3) If multiple settings provide identical tensile strengths for a crimp joint, the setting selected shall be the one that provides more wire breaks than wire pullouts.
b. The following requirements apply for the production quality control test:
(1) The crimp tools and each contact-conductor, or crimp ferrule-conductor, combination to be used in a production run shall be tested at the start and at the end of each work shift or production run, whichever is shorter, using crimp pull testing. The test prior to a shift or production run can be skipped if the test had been done at the end of the prior shift or production run and no change to the tools has occurred since the last pull test. The test at the end of the shift may be skipped if it will be done at the start of the next shift or production run and no change to the tools will occur prior to the next test.
(2) The record of successful pull testing shall be traceable to the contact or ferrule, wire, crimp tool, crimp setting used and the production run or shift.
(3) Hardware produced prior to the failed pull test shall be identified as suspect and evaluated prior to use to assure it is defect-free.
(4) Production shall not proceed until there are zero failures out of three samples tested.
c. The following requirements apply for the Test Method and Failure Categories:
(1) The crimp contacts or ferrules shall be placed in a tensile-testing device with appropriate fixtures, and sufficient force shall be applied to pull the wire out of the assembly or to break the wire or crimped item.
(2) The head travel speed of the tensile device shall be 25.4 ± 6.3 mm (1.0 ± .25 in) per minute. The holding surfaces of the tensile device clamp may be serrated to provide sufficient gripping and holding ability.
(3) Crimp pull strengths shall meet the values in Table 12-1. Wire pull out, wire breaks at the crimp, and contact rupture which occur below the minimum pull strength value are considered test failures.
(4) For those contact-conductor crimp connections not contained in Table 12-1, the tensile strength of the crimp connection shall be no less than 60 percent of the tensile strength of the wire. Reference the manufacturer’s datasheet for wire tensile strength.
(5) For crimp ferrule-conductor combinations the wire pulled shall meet the tensile requirement for a single wire of the same gauge being tested in its “properly sized” contact.
(6) Examination of Test Samples. Each individual test sample shall be inspected to the requirements of 12.3.5.c(3) and the observations should be recorded and maintained for passing units and shall be recorded for failing units.
(7) The pull strength and break or release condition for test failures shall be recorded. d. Alternative quality control systems may be used for assuring crimp production lots when they are approved in advance in accordance with Chapter 4 of NASA-STD-8739.6.
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