JPS59106926A - Blast material - Google Patents

Abstract

PURPOSE:To obtain blast material capable of removing fine burrs at a corner and reducing burr-removing time by mixing fine grain material larger in specific gravity and better in wear resistance than nylon with nylon. CONSTITUTION:At least one of fine grain materials such as alumina, ceramics, glass or carborundum, etc. that have a grain diameter of 50-100mum is added and mixed at a volmetric ratio of 10-50% to the nylon pellet. This mixture is heated and melted in a wire injection molding machine to be extruded into a fixed diameter wire and this wire is cooled and cut by a rotary cutter to the length nearly equal to the wire diameter to make blast material.

Description

【発明の詳細な説明】 本発明はナイロン線を切断してなる投射材の改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a shot material made by cutting a nylon wire.

従来、プラスチック成形品やゴム成形品等の被処理面に
ナイロン線を切断した投射材を投射装置より投射して被
処理面から契起したパリを清掃除去するようにしている
。しかし、ナイロン線を切断した投射材は比１１１が低
いため、空気抵抗による失速が大きく、投射エネルギ十
を確保するため初速を大きくしたり、或いは粒径の大き
いものを使用していた。しかし、前考においては省エネ
ルギーの観点より問題があり、また後者においては、パ
リ取りに時間がかかると共に、パリが残るなどの問題が
あった。BACKGROUND ART Conventionally, a projection material made of cut nylon wire is projected onto the surface of a plastic molded product, a rubber molded product, or the like to be treated using a projection device to clean and remove particles generated from the surface to be treated. However, since the projection material made from cut nylon wire has a low ratio 111, the stall due to air resistance is large, and in order to ensure enough projection energy, the initial velocity must be increased or materials with large particle diameters must be used. However, the former method had problems from the viewpoint of energy saving, and the latter method had problems such as it took a long time to remove the dust and the dust remained.

本発明はこれらの問題点を解決することを目的とするも
のである。The present invention aims to solve these problems.

以下に、本発明の実施例について説明する。ナイロンペ
レットに、粒子径５０〜１００μのアルミナ、セラミッ
ク、ガラス、或いはカーボランダム等の微粒子物質のう
ち少なくとも１つの微粒子物質を、ナイロンペレットに
対して該微粒子物質の含イ１量が体積比で１０〜５０％
になるように添加混合してナイロンペレットと該微粒子
物質の混合物を生成するとともに、この混合物を線材用
射出成型機により加熱溶融しながら一定線径の線材に押
出し成形する。次いで、この線材を冷却後、切断工程に
送って、回転カッ々により、線径と概同等長さに切断し
、投射材とするものである。Examples of the present invention will be described below. At least one particulate material of alumina, ceramic, glass, or carborundum having a particle size of 50 to 100 μ is added to the nylon pellet, and the content of the particulate material is 10% by volume relative to the nylon pellet. ~50%
A mixture of nylon pellets and the particulate material is produced by adding and mixing the nylon pellets so that the mixture is heated and melted using an injection molding machine for wire rods, and extruded into a wire rod of a constant diameter. Next, after cooling this wire rod, it is sent to a cutting process and is cut into a length approximately equal to the wire diameter using a rotating cutter to obtain a projection material.

このように、本発明の投射材はナイロンより比重が高く
、かつ耐摩耗性の優れた粉粒状の微粒子物質を、ナイロ
ンと混ぜ合わせることにより、従来は取残されていた角
部の細かいパリも除去できるようになると共に、パリＩ
ｌｖり時間も短縮できて生産性が向上し、さらにはこの
投射材は鉄分の付着を嫌っていたアルミニューム、黄銅
などの非鉄金属の表面処理加工にも適用でき、また樹脂
製の板材、線材等のつや消し加工にも利用できるなどの
効果を付し、この柿の業界に寄与する効果は著大である
。In this way, the projectile material of the present invention mixes nylon with powder-like particulate matter that has a higher specific gravity than nylon and has excellent abrasion resistance, so it can also remove fine particles at corners that were previously left behind. As well as being able to remove Paris I
In addition, this projection material can be applied to surface treatment of non-ferrous metals such as aluminum and brass, which do not like the adhesion of iron, as well as resin plate materials and wire materials. It has the effect of being able to be used for matte processing, etc., and its contribution to the persimmon industry is significant.

特許出願人　新東工業株式会社 ３−Patent applicant: Shinto Kogyo Co., Ltd. 3-

Claims (1)

【特許請求の範囲】[Claims] ナイロンペレットに、粒子径５０〜１００μのアルミナ
、セラミック、ガラス或いはカーボランダム等の微粒子
物質のうち少なくとも１つの微粒子物質を、該ナイロン
ペレットに対して体積比で１０〜５０％含何させたこと
を特徴とする投射材。The nylon pellets contain at least one particulate material such as alumina, ceramic, glass, or carborundum having a particle size of 50 to 100 μ in an amount of 10 to 50% by volume based on the nylon pellets. Characteristic projection material.