JPS6085091A - Frp-made hull coated with metal, and method of manufacturing said hull - Google Patents

Abstract

PURPOSE:To provide an FRP-made hull excellent in resistance to shock and wear, by spraying a molten metal such as carbon steel and stainless steel on a molding die whose inside surface is previously processed for separating the molded product from the die, to make a coating layer on the inside surface, and by molding the FRP on the layer. CONSTITUTION:The inside surface of a die for molding an FRP-made hull is first processed for separating the molded product from the surface. Molten zinc is then sprayed at a thickness of 0.05 to 0.5mm. on the inside surface of the die. A metal such as carbon steel and stainless steel is provided on the zinc by arc melt-spraying, plasma melt-spraying or the like so that a coating layer of 0.5 to 3mm. in thickness is made of the zinc and the latter metal. The FRP is molded on the coating layer. Since the FRP-made hull is coated with the layer comprising the zinc and the other metal and firmly conjoined to the hull, the hull is excellent in resistance to shock and wear even on ice-containing water or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal-coated fiber-reinforced thermosetting resin ship hull and a method for manufacturing the same. Furthermore, it has excellent impact resistance with a metal layer on the surface of the hull.
IJ [J? It is something that can be done.

Conventionally, fiber reinforced thermosetting ↑ (I resin (above, FRI on the instep)
-). ) has excellent corrosion resistance and is lightweight, so it is widely applied to the hulls of fishing boats and the like.

However, due to impact and scratching, it is easy to cause abrasion and has low abrasion resistance, so when operating in the northern frozen region, the hull is easily damaged by impact from ice blocks and friction. There is. To improve this f: Rl:)
There is also a method of protecting the P hull by installing zinc medium steel plates or stainless steel plates around the water line of the P hull.
During operation, serious problems such as fishing nets getting caught on studs or the edges of steel plates occur.

Therefore, the current situation is to use hulls made of FRf, which is easy to mold and is coated with abrasion-resistant paint 1j1.

The inventor of the present invention has arrived at the present invention as a result of various investigations in view of the current situation. However, the first object of the present invention is to provide a metal-coated FRP ship hull characterized by having a coating layer formed by metal spraying on the outer surface of the P ship hull. It is in. In addition, the other purpose is
Rl) An object of the present invention is to provide a method for manufacturing a ship hull.

Metal spraying used in the present invention and 1, Katana SuiTJ! J.J.
, 7~ri thermal spraying, brass melting 0/1 etc. metals or ceramics etc. are melted or lit cliff molten state (-blown [
The method used to form a 0.1 coating is used for thermal spraying on metals such as iron, nofluminium 11, stainless steel, zinc, copper, bronze, brass, gunmetal, 7fluminium oxide,
Titanium oxide, silicon oxide, oxidation-? All materials commonly used in thermal spraying can be used, such as ceramics such as gnesium, zirconium oxide, calcium oxide, iron oxide, and chromium oxide.

The overall thickness of the coating layer formed by metal spraying is preferably Q, 5 mm or more in order to withstand the impact and friction caused by ice blocks in frozen regions, but even if the thickness exceeds 3 mm, the effectiveness will not improve much. Not economical.

In order to manufacture a ship hull made of F Rl coated with the metal of the present invention, a mold release treatment is applied to the mold in advance to prevent VM shock and friction caused by drift ice, which corresponds to the most vulnerable parts. First, a metal spray coating with a thickness of 0.5 mm or more and 3 mm or more is formed on the part of the molding mold, and then a reinforcing fiber is added to the thermosetting resin on the mold surface, including the coating. A reinforced thermosetting resin is supplied, cured, and released from the mold after molding. At this time, for molding, which has been subjected to mold release treatment in advance! 1? First, spray zinc onto the desired area of 0.05 m.
Zinc coating with a thickness of less than 0.5 mm)
After that, a sprayed coating other than zinc is overlaid on top of the coating, and the total thickness of the coating layer is 0.5 mm or more. Il++ from the usage type
F'RI' molding can be carried out in a highly efficient manner by performing 0 steps of F'RI' step by step.

In this case, the initial thermal spray coating of 4N lead is 0. CL5
The IJ effect is sufficient with a thickness of n1 m (i)
Even if the thickness is greater than 0.5 mm, the effective base will not change, but it is desirable to keep the thickness to less than 0.5 mm in order to emphasize the characteristics of the next overlapping metal sprayed coating other than 14).

The choice of carbon steel or stainless steel as a subsequent coating after the initial zinc coating of 0.05 mm to less than 0.5 mm confers the excellent mechanical properties of this metal. C roughness is preferable. And these carbon steel Yasunon 1.・Steel alone (゛) has 5 C which is easily corroded in seawater, but it is protected by B3's first saccharide 04 coating, and C-1 has a protective effect of wave hull on 1111. Yasunozu can do it.

The reinforcing fibers of the present invention include glass fibers, aramid fibers, carbon m-strings, etc. commonly used in this field.
It is possible to use an appropriate selection from among those available, and base materials such as roving, russian, and three-piece strand mats can be used.

As the thermosetting resin, resins that are liquid at room temperature are used, such as epoxy resins, vinyl ester resins, and unsaturated polyconistyl resins, among which unsaturated polyester resins are most commonly used because they are easy to handle.

Forming is generally done using the hand lay-up method if the hull is large.
A spray-up method is used. For relatively small hulls, the resin ink method is also used. In this case, the molding is carried out by supplying the necessary reinforcing fibers into the molding mold in which the thermal sprayed coating has been formed, and then covering it with a mold that can maintain the required thickness of the void in the hull, sealing the surrounding area, and then installing it in advance. This is done by injecting thermosetting resin from Noda Resin Supply.

In advance #] Apply the gel to the mold (before forming the metal spray coating on the mold) -1.
After the coating is applied and the gel = 1-1- is cured, a metal sprayed coating is formed on the desired part of the mold, or after the metal sprayed coating is formed, a glue recess is formed on the part other than the part where the sprayed coating was formed. 1-
After painting, molding of [R1] is carried out, and it is necessary to carry out the present invention with t, lit, etc. b'
(IYI-Aru, 1 In addition, metal coated F Rl
-'The hull may be painted using a commonly used ship bottom paint after type 11.

According to the present invention, the thermal sanding resin penetrates into the porous molten copper coating layer and hardens inside, and due to its anchoring effect, the metal sprayed coating is firmly bonded to the FRP hull and integrated. Then,
-1, a smooth hull surface is obtained and tfii'? i', I? The lifespan of the hull will be significantly improved as it becomes more resistant to stress.

Hereinafter, the present invention will be explained in more detail with reference to Examples. In addition, the parts in the examples represent important parts.

Example 1 A molding knife for a 19-ton type fishing boat was coated with a molding agent (E1 Hon Shokubai Kagaku Kogyo Co., Ltd. (1shu, Evolac IE P-11)) as a sponge. Water line 1-20 from the ship's port to the center of the hull of V1
0 mnul+ Arc melting Q・1(
IIi lead was thermally sprayed to a thickness of 0.1 mm (according to a known method) using a 375[+-S] manufactured by US 1kl l△1: He Co., Ltd. (according to a known method). [E) Stainless steel SUS 304
Il+ was sprayed first! The lead was sprayed to a thickness of 1 mm on the sprayed surface. After masking the sprayed coating, 100 parts of gel coat resin (manufactured by 1-1 Hon Shokubai Kagaku Kogyo Ill, ■Borac N-300'1-), 7 parts of white 1 to -ner, and 0 8% cobalt cidate solution were added. .3 parts and 1 part of a 55% solution of methyl ethyl ketone peroxide were mixed and the gel coat composition was poured over the entire mold using a roll bucket.
I applied "Site Guru"-1-. After the masking of the thermal spray coating was removed and the gel coat was properly cured, a saturated polyester resin (Bon Catalyst Kagaku Gogyo Co., Ltd., G-7) was used.
73P'r M Y ) 100 parts of Methyl Ezilk
A resin composition prepared by mixing 1 part of a 55% solution of Δxide with Ll-Binkuku 1-Stran-Mat (manufactured by Nittobo ■, MC-75,0Δ) and (1) Unpaid (1◇ manufactured by W +, R-570) was laminated on the entire mold including the thermal spray coating using the hand layup method.1 The lamination was chopped strand 1: 5 and 55 were alternately applied with the above resin composition, and then cured at room temperature.
T Ill type. The J17 has an FRP hull coated with metal from the bow to the center of the belly, F200mm above the waterline.

If the completed fishing boat is operated in the frozen area of I! ! However, the ice block (there was no damage to the hull, and the metal layer on the hull surface was smooth) was integrated with the hull, causing difficulty in maneuvering. There wasn't,
.

Claims (1)

[Claims] 1. The outer surface of the hull made of r-Rl') [characterized by having a coating layer formed by bimetallic spraying and coated with a covering metal;
'-'I! l Hull 1°2, FRP hull! , The second molding Sil+ was subjected to mold release treatment l), and the surface of A was sprayed with metal J, Ru05~
3IIln1 thickness: *vim is set up (), uncured fiber-reinforced thermoset 1411 resin is supplied on (), and the uncured fiber-reinforced thermoset 1411 resin is molded from a mold for molding the cured glue integrally with the coating layer. of the hull made of metal (WJed FRI)
Fj ifk method. 3. Metal welding spout on the surface of the mold with type 11 treatment.
! But first, the thickness is from 0.05 mm to less than 0.5 mm! When lead is melted, t = t qll Metals other than t < 1 are melted and the whole is 05III1 or more.
The manufacturing method according to claim 2, wherein the coating layer has a thickness of 111111 to 1. 4. Special case where the metal other than ζ4) is carbon steel! 1. The manufacturing method according to claim 2, item 3. 5. The manufacturing method according to claim 3, wherein the metal other than zinc is stainless steel.