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High-strength mineral casting machine tool frame and preparation method thereof

A high-strength, machine tool technology, applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve the problems of low toughness, limited strength improvement, poor anti-peeling strength, etc., and achieve excellent compressive strength and long service life , high gloss effect

Inactive Publication Date: 2018-04-20
宁波宫铁智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the compressive strength, tensile strength and flexural strength of mineral castings in the prior art are low, and problems such as cracking and fracture are easily caused during use.
For example, Chinese patent application (CN201610069783.8) discloses a cobblestone-based composite machine tool bed mineral casting and its preparation method, with pebbles and quartz sand as the main materials, high-temperature resistant epoxy resin as the binder, and carbon fiber and rare metals as fillers, but its strength still needs to be improved, and the traditional thermosetting epoxy resin itself has a high crosslinking density, the main chain segment is difficult to move when heated, and after curing and molding, it has high brittleness, low toughness, and extremely high peel strength. Poor, so the mineral castings made are easy to crack, and the strength improvement is limited

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  • High-strength mineral casting machine tool frame and preparation method thereof

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Effect test

Embodiment 1

[0036] The high-strength mineral casting machine tool frame in the present embodiment comprises the following components in parts by weight:

[0037] Granite sand 100 parts,

[0038] Kaolin 15 parts,

[0039] Barite powder 6 parts,

[0040] 16 parts of SEBS particles,

[0041] 20 parts of modified epoxy resin,

[0042] 13 parts of curing agent polyetheramine,

[0043] 15 parts of glass fiber.

[0044] Among them, the granite sand includes the first-grade granite sand and the second-grade granite sand, the particle size of the first-grade granite sand is 700-800 μm, the particle size of the second-grade granite sand is 80-100 μm, and the particle size of kaolin is 5- 10 μm, the weight ratio of the first grade granite sand and the second grade granite sand is 70:30.

[0045] The modified epoxy resin is an epoxy resin added with 1.8wt% modified nano-SiC, and the modified nano-SiC is nano-SiC grafted with polyethylene glycol.

Embodiment 2

[0047] The high-strength mineral casting machine tool frame in the present embodiment comprises the following components in parts by weight:

[0048] Granite sand 100 parts,

[0049] Kaolin 20 parts,

[0050] Barite powder 7 parts,

[0051] SEBS particles 19 parts,

[0052] 22 parts of modified epoxy resin,

[0053] Curing agent aromatic amine 15 parts,

[0054] Glass fiber 18 parts.

[0055] Among them, the granite sand includes the first-grade granite sand and the second-grade granite sand. The particle size of the first-grade granite sand is 500-600 μm, the particle size of the second-grade granite sand is 30-50 μm, and the particle size of kaolin is 5-600 μm. 10μm, the weight ratio of the first grade granite sand and the second grade granite sand is 75:25.

[0056]The modified epoxy resin is an epoxy resin added with 2.0wt% modified nano-SiC, and the modified nano-SiC is nano-SiC grafted with polyethylene glycol.

Embodiment 3

[0058] The high-strength mineral casting machine tool frame in the present embodiment comprises the following components in parts by weight:

[0059] Granite sand 100 parts,

[0060] Kaolin 26 parts,

[0061] Barite powder 7 parts,

[0062] 21 parts of SEBS particles,

[0063] 23 parts of modified epoxy resin,

[0064] Curing agent aromatic amine 18 parts,

[0065] 21 parts of glass fiber.

[0066] Among them, the granite sand includes the first-grade granite sand and the second-grade granite sand, the particle size of the first-grade granite sand is 550-650 μm, the particle size of the second-grade granite sand is 50-70 μm, and the particle size of kaolin is 5-650 μm. 10μm, the weight ratio of the first grade granite sand and the second grade granite sand is 80:20.

[0067] The modified epoxy resin is an epoxy resin added with 2.2wt% modified nano-SiC, and the modified nano-SiC is nano-SiC grafted with polyethylene glycol.

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Abstract

The invention relates to a high-strength mineral casting machine tool frame and a preparation method of the high-strength mineral casting machine tool frame, and belongs to the technical field of mineral casting. The machine tool frame disclosed by the invention comprises the following components in parts by weight: 100 parts of granite sand, 15 to 33 parts of kaolin, 6 to 8 parts of barite powder, 16 to 23 parts of SEBS particles, 20 to 25 parts of modified epoxy resin, 13 to 21 parts of a curing agent, and 15 to 23 parts of glass fiber. The machine tool frame prepared by the method has excellent compressive strength, tensile strength, bending strength, higher glossiness and long service life.

Description

technical field [0001] The invention belongs to the technical field of mineral casting, and relates to a high-strength mineral casting machine tool frame and a preparation method thereof. Background technique [0002] Mineral castings are a new type of high-filling composite material made of natural stone as aggregate and thermosetting resin as adhesive, which are mixed, stirred, vibrated and compacted, and polymerized. The vibration damping capacity of mineral casting materials is 6-8 times that of cast iron, and about 9-10 times higher than that of steel. Because the higher the damping performance of the material, the higher the machining accuracy, so the machine tool with mineral casting bed has the advantages of Good processing performance. Due to the high specific heat of the mineral casting material, but the low thermal conductivity, the material has good thermal stability. Mineral castings also have the advantages of low density, corrosion resistance, good dimension...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/14B23Q1/01
CPCB23Q1/015C04B26/14C04B2201/50C04B14/048C04B14/106C04B14/368C04B16/08C04B24/121C04B14/42
Inventor 朱建群
Owner 宁波宫铁智能科技有限公司
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