公司动态

了解最新公司动态及行业资讯

当前位置:首页>新闻中心>公司动态
全部 14 公司动态 10 行业动态 4

有关离心铸造巴氏合金轴瓦轴套的一些基本概念

时间:2021-11-18   访问量:1017

离心铸造工艺使用旋转模具将金属均匀地送入型腔。定向凝固可提供干净、致密的铸件,其物理性能通常优于静态铸件。用这种方法制造的铸件是创造性的。理想的铸件是中心中空的对称铸件。这种类型的铸件接近100%的成品率。这意味着离心过程是高效和高产的。

The Centrifugal casting process uses rotating molds to feed the metal uniformly in the mold cavity. Directional solidification provides for clean, dense casting with physical properties that often are superior to static castings. Casting which can be made by this process are creativeness. The ideal casting are symmetrical with a hollow center. Casting of this type approach 100% yield. This means the centrifugal process is highly efficient and productive.

图:我厂浇铸的大型薄壁巴氏合金双金属轴套 

1637196852233764[1].jpg

离心铸造,有时称为旋转铸造,是一种利用离心力形成圆柱形零件的金属铸造工艺。这与大多数金属铸造工艺不同,后者使用重力或压力填充模具。在离心铸造中,通常使用钢、铸铁或石墨制成的永久性模具。然而,也可以使用消耗性砂型。铸造过程通常在卧式离心铸造机(也可使用立式铸造机)上进行,包括以下步骤:


模具准备-圆柱形模具的壁首先涂上耐火陶瓷涂层,这涉及几个步骤(应用、旋转、干燥和烘烤)。一旦准备好并固定,模具将以高速(300-3000 RPM)绕其轴旋转,通常约为1000 RPM。


浇注-熔融金属直接浇注到旋转模具中,无需使用流道或浇注系统。当模具填充时,离心力将材料推向模具壁。


冷却-当所有熔融金属都在模具中时,模具在金属冷却时保持旋转。冷却从模具壁快速开始,并向内进行。


铸件移除-铸件冷却和凝固后,停止旋转并移除铸件。


精加工-当离心力将致密金属推向模具壁时,任何密度较低的杂质或气泡都会流入铸件的内表面。因此,需要二次加工,如机加工、磨削或喷砂,以清洁和磨光零件的内径。


离心铸造用于生产轴对称零件,例如圆柱体或圆盘,这些零件通常是空心的。由于高离心力,这些零件的外表面有非常细的晶粒,其机械性能比采用静态铸造方法成形的零件高约30%。这些零件可以由黑色金属(如低合金钢、不锈钢和铁)铸造,也可以由非铁合金(如铝、青铜、铜、镁和镍)铸造。离心铸造广泛应用于各种行业,包括航空航天、工业、船舶和电力传输。典型零件包括轴承、衬套、线圈、缸套、喷嘴、管道、压力容器、皮带轮、环和车轮。


Centrifugal casting, sometimes called rotocasting, is a metal casting process that uses centrifugal force to form cylindrical parts. This differs from most metal casting processes, which use gravity or pressure to fill the mold. In centrifugal casting, a permanent mold made from steel, cast iron, or graphite is typically used. However, the use of expendable sand molds is also possible. The casting process is usually performed on a horizontal centrifugal casting machine (vertical machines are also available) and includes the following steps:


  1. Mold preparation - The walls of a cylindrical mold are first coated with a refractory ceramic coating, which involves a few steps (application, rotation, drying, and baking). Once prepared and secured, the mold is rotated about its axis at high speeds (300-3000 RPM), typically around 1000 RPM.

  2. Pouring - Molten metal is poured directly into the rotating mold, without the use of runners or a gating system. The centrifugal force drives the material towards the mold walls as the mold fills.

  3. Cooling - With all of the molten metal in the mold, the mold remains spinning as the metal cools. Cooling begins quickly at the mold walls and proceeds inwards.

  4. Casting removal - After the casting has cooled and solidified, the rotation is stopped and the casting can be removed.

  5. Finishing - While the centrifugal force drives the dense metal to the mold walls, any less dense impurities or bubbles flow to the inner surface of the casting. As a result, secondary processes such as machining, grinding, or sand-blasting, are required to clean and smooth the inner diameter of the part.

Centrifugal casting is used to produce axi-symmetric parts, such as cylinders or disks, which are typically hollow. Due to the high centrifugal forces, these parts have a very fine grain on the outer surface and possess mechanical properties approximately 30% greater than parts formed with static casting methods. These parts may be cast from ferrous metals such as low alloy steel, stainless steel, and iron, or from non-ferrous alloys such as aluminum, bronze, copper, magnesium, and nickel. Centrifugal casting is performed in wide variety of industries, including aerospace, industrial, marine, and power transmission. Typical parts include bearings, bushings, coils, cylinder liners, nozzles, pipes/tubes, pressure vessels, pulleys, rings, and wheels.


上一篇:磨粉矿厂风机轴瓦巴氏合金瓦维修加工

下一篇:没有了!

发表评论:

评论记录:

未查询到任何数据!

在线咨询

点击这里给我发消息 售前咨询专员

点击这里给我发消息 售后服务专员

在线咨询

免费通话

24小时免费咨询

请输入您的联系电话,座机请加区号

免费通话

微信扫一扫

微信联系
返回顶部