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Jiangsu HT250 material beam/table of machine tool bed castings/ductile iron base cast iron foundry
Product parameters:
- Sand casting categories: clay-sand
- Special casting types: EPC
- Surface treatment: spray paint high temperature annealing
- Material: ht250
- Processing: gravity casting
- Tolerances: 0.50
- Sampling period: 4-7 days
- Processing period: 4-7 days
- Annual excess processing capacity: 800
- Annual processing capacity: 1000
Machine tool castings Own property directly influences the quality of machine tool castings, machining, machine tool castings of which value is to determine the hardness of the casting process is an important indicator. Machine tool castings in rough, sand, rough castings after annealing for materials research and testing.
A company using Brinell hardness tester to determine the casting billet and annealing of the hardness range of determination ≯HB450. Machine tool castings should be aware of when using the environment to avoid iron oxide skin and other foreign bodies to enter the inside of the machine. No vibration, no strong light, does not have a strong magnetic field environment.
Second, the Rockwell hardness :HRA Mainly used for high hardness test ,Determination of hardness is higher than HRC67More material and surface hardness ,Such as cemented carbide, nitride steel, measuring range HRA﹥70. HRC Mainly used for steel parts (Such as carbon steel, tool steel, alloy steel )Determination of hardness after quenching and tempering ,Measuring range HRC20~67.
Three .Vickers hardness :Used to determine the hardness of thin parts and steel products ,Can also be used to test for carburizing, cyanidation, nitride hardening hardness of the workpiece.
Company's machine tool castings production strictly in accordance with the technical requirements, strict control of production process, layers of control
Machine tool castings Technical parameters of surface hardness, hardness and useful machine tool castings parts hardened layer depth. Hardness testing Vickers hardness testers, surface Rockwell hardness testers accuracy is not high Vickers hardness tester. Also can use Rockwell Rockwell hardness or appearance. Selection and useful the ruler and hardening depth workpiece surface hardness. Three kinds of hardness you can roughly indicate.
Surface Rockwell hardness tester is also very suitable for inspection looks quenched hardness of workpiece surface Rockwell hardness tester has three ruler to choose from. Inspection shall be useful depth across the 0.1mm Look hardened workpieces.
When the surface hardening layer is thick, or Rockwell hardness testers. When the hardening layer thickness 0.40.8mm , You can use HRA Rod, cast iron plate when the hardened layer thickness across 0.8mm , You can use HRC The ruler.
Vickers, Rockwell Rockwell three kinds of hardness and appearance can be made easy conversion, convert specification, drawing or user needs the hardness value. Corresponding conversion table at world norm ISO United States Code ASTM And Chinese code GB/T Have been given.
As detection methods of heat treatment plant quality and qualified products can meet the requirements. What's more, it also has more simple operation, easy to use, low value and measure the right, can be directly read hardness characteristics of mass by using casting Rockwell hardness tester looks for heat treated parts piece by piece for rapid non-destructive testing. 
Design of machine tool column :Reasonable structure and reinforcement of tie-in .Machine tool bed torsion .Seismic .Improve the rigidity of machine tool bed .For the NC machine tool with good stiffness .Should pay attention to selection of machine tool column structure .Such as :Full box of machine tool column using closed structure .Machine tool column using a closed section .Reasonable choice and layout of machine tool bed baffles and ribs .Minimize interface .Improve part stiffness . Longitudinal partition mainly to improve machine tool bed bending stiffness ,Mainly raise bed horizontal clapboard torsional rigidity ,Diagonal partition both raise column flexural stiffness .Effect of torsional rigidity.
Other casting products:
Planer, table, pedestal, machine columns, beams, portal, connecting beams, gantry milling machine, floor boring and milling machine, milling machine, pop in bed, machine tool castings, machine base, casting machine, cast iron slide, large castings, machine base plate, Cast iron platform, iron tools, marble tools and so on.
You are welcome to call and negotiate !My company ' quality first, full service ' approach to every detail to provide customers with first-class products and a high level of service, must ensure a reasonable commercial rates and quality of formal national standards. 
