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    PRODUCTION OF HEAT-TRANSFER PIPE
    22.
    发明专利
    PRODUCTION OF HEAT-TRANSFER PIPE 失效

    公开(公告)号：JPS6210296A

    公开(公告)日：1987-01-19

    申请号：JP14959585

    申请日：1985-07-08

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： NAKAMA HIROTO ,  INATANI MASATOSHI

    IPC: F28F1/40 ,  C25D5/16 ,  C25D7/00

    Abstract: PURPOSE:To produce the titled heat-transfer pipe having a rugged metallic plated layer on the inner wall surface by introducing a plating soln. added with an oxyethylene surfactant and low-concn. chloride ions into the heat- transfer pipe along with bubbles and carrying out plating. CONSTITUTION:A heat-transfer pipe 10 firmly attached with a radiating fin 3 is held above a plating bath 7. A plating soln. 9 is circulated through the inside of the heat-transfer pipe 10 by a connecting pipe 11 and a circulating pump 12, the plating soln. 9 is simultaneously dripped into the plating bath 7 and generated bubbles are sent into the heat-transfer pipe 10. About 0.6mol/l CuSO4 and about 0.5mol/l H2SO4 are incorporated into the plating soln. 9 and about 0.33X10 mol/l HCl and about 19mg/l polyoxyethylene oleyl ether are further added to the soln. Under such conditions, the heat-transfer pipe 10 and a counter electrode 14 having a spacer 16 are connected to a DC electric power source 13 through a connecting terminal 15 and an electric current is passed. Consequently, a rugged copper-plated layer having excellent hardness and adhesion is formed on the inner wall surface of the heat-transfer pipe 10 and the heat-transfer area is increased.

    HEAT EXCHANGER TUBE
    23.
    发明专利
    HEAT EXCHANGER TUBE 失效

    公开(公告)号：JPS61291990A

    公开(公告)日：1986-12-22

    申请号：JP13347085

    申请日：1985-06-19

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： NAKAMA HIROTO ,  INATANI MASATOSHI

    IPC: C25D5/16 ,  C25D7/00 ,  F24J2/46 ,  F28D15/02 ,  F28F13/02 ,  F28F13/18

    Abstract: PURPOSE:To obtain a heat exchanger tube having a boiling heat transfer accelerating effect by forming an uneven metallic layer on the surface of the inner wall of a group tube by plating with a plating soln. contg. an oxyethylene surfactant and low concn. chloride ions so as to increase the surface area. CONSTITUTION:An uneven metallic layer 5 of copper or the like having superior adhesion is uniformly formed on the surface 4 of the inner wall of a group tube having heat radiating fins 3 for a heat exchanger 1 by plating with a plating soln. contg. an oxyethylene surfactant such as polyoxyethylene oleyl ether and low concn. chloride ions as additives. The surface area is increased and a heat exchanger tube having a boiling heat transfer accelerating effect is obtd.

    FORMATION OF POROUS LAYER BY PLATING
    25.
    发明专利
    FORMATION OF POROUS LAYER BY PLATING 失效

    公开(公告)号：JPS61217594A

    公开(公告)日：1986-09-27

    申请号：JP5686185

    申请日：1985-03-20

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： NAKAMA HIROTO ,  INATANI MASATOSHI

    IPC: C25D7/00 ,  C25D5/16

    Abstract: PURPOSE:To form an uneven layer having superior adhesion by plating by adding an oxyethylene surfactant to a plating soln. contg. chloride ions at a low concn. CONSTITUTION:A plating soln. contg. chloride ions at a low concn. and an oxyethylene surfactant is prepd. The surfactant is further added to the plating soln. to convert metallic ions into metallic complex ions. Since the metallic complex ions bond unstably to the chloride ions, an uneven layer is formed by plating.

    VACUUM FORMING MACHINE
    29.
    发明专利
    VACUUM FORMING MACHINE 失效

    公开(公告)号：JPS6027517A

    公开(公告)日：1985-02-12

    申请号：JP13649583

    申请日：1983-07-25

    Applicant: MATSUSHITA REFRIGERATION

    Inventor： NAKAMA HIROTO

    IPC: B29C51/10 ,  B29C51/04 ,  B29C51/26 ,  B29C51/30 ,  B29K101/00 ,  B29L24/00

    Abstract: PURPOSE:To obtain a formed piece with an equal thickness free from partial reduction by a method wherein on the sides of the 1st projections of a plug pressing a heated thermoplastic resin sheet to a mold at least a pair of the 2nd projections are provided and forced in by the 1st, 2nd projections in steps. CONSTITUTION:When a plug 17 is forced into a mold 5, the projected heights of the ends of a pair of 2nd projections 19 and a pair of 3rd projections 20 are determined so that they are located under the edge lines 21, 22 connecting the lowest ends P-P of a 1st projections 18 and the corners Q, Q of rising parts 6a, 6b. In the projections 17a, 17b of the plug 17 provided in this manner, when a sheet is forced into the mold 5, the 1st projections 18 of the plug, the 2nd projections 19 thereof, the 3rd projections 20 the thereof come sequentially in contact with the sheet and therefore, the specified portion of the sheet is not elongated.

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