丁香五月天综合缴情网

<th id="uhm9l"><sup id="uhm9l"></sup></th>

    <center id="uhm9l"></center>
      <center id="uhm9l"></center>

      1.  

        Grey Iron Spare Parts

        Original
        price: Negotiable
        minimum:
        Total supply:
        Delivery term: The date of payment from buyers deliver within days
        seat: Beijing
        Validity to: Long-term effective
        Last update: 2020-05-24 16:14
        Browse the number: 119
        inquiry
        Company Profile
         
         
        Product details

        Basic introduction

        Material name: gray iron 200

        Brand: HT200

        Standard: GB/T 9439-2010

        Refers to gray cast iron with a minimum tensile strength of 200MPa.

        Hardness: 163~255HBS

        Chemical composition: C:3.0 ~ 3.6s :≤0.12 P: <0.15 Mn: 0.6 ~ 1.0 Si: 1.4 ~ 2.0

        ?

        Scope of application

        Low tensile strength and plasticity, good casting performance and damping performance, mainly used for casting automobile engine cylinders, cylinder jackets, lathe beds and other pressure and vibration components.

        ?

        Chemical composition:

        If the technical conditions of the demander include acceptance requirements for chemical components, the requirements of the demander shall apply. The frequency and quantity of the chemical composition shall be determined by the supplier or by the supplier.

        If the chemical composition is not required by the buyer, the chemical composition shall be determined by the supplier, and shall not be used as the basis for acceptance of the casting. However, the selection of chemical composition must ensure that the casting materials meet the requirements of mechanical properties and microstructure specified in this standard.

        Spectral chemical analysis shall be performed in accordance with GB/T 4336.

        Conventional chemical composition analysis of castings shall be performed in accordance with GB/T 223.3, GB/T 223.4 and GB/T 223.60.

        ?

        Mechanical properties:

        σb ≥200Mpa


        Applications

        1. Important castings in general machinery manufacturing, such as cylinders, gears, frames, beds and surfaces of metal cutting machines; Etc.

        2. Cylinder blocks, cylinder heads, pistons, brake wheels, coupling discs and piston rings for gasoline and diesel engines of automobiles and tractors

        3. It has the joint construction of measuring planes, such as: marking plates, v-shaped irons, flat rulers, horizontal instrument frames, etc

        4. Hydraulic cylinders, pump bodies, valve bodies under medium pressure of 7.85mpa and pump shells and containers requiring certain corrosion resistance, such as pump bodies, pump covers, impellers, etc. of submersible sewage pumps

        5. Circumferential velocity > 12 ~ 20 m/s pulley and other listed items conform to the conditions of the parts

        6. Parts to be surface-hardened

        ?

        Cast iron level

        High strength cast iron, pearlitic base, good strength, abrasion resistant, heat resistance and vibration reduction. The casting performance is good, and manual aging treatment is needed.

        ?

        The working conditions

        1. Parts under greater stress (bending stress <29.40MPa)

        2. Pressure per unit area between friction surfaces > 0.49mpa (pressure > 1.47mpa for large castings working under wear and tear greater than 10t)

        3. Certain air tightness or a weak corrosion resistance medium is required


        http://www.jzyglobalcasting.com/

        Total0bar [View All]  Related Comments
         
        more»Other products

        [ Products search ] [ favorites ] [ Tell friends ] [ Print ] [ Close ]

        ? 丁香五月天综合缴情网

        <th id="uhm9l"><sup id="uhm9l"></sup></th>

        <center id="uhm9l"></center>
          <center id="uhm9l"></center>