阅读说明：本技术 金属焊接件复合材料及其制备方法 (Metal welding part composite material and preparation method thereof ) 是由 薛寅 于 2020-08-12 设计创作，主要内容包括：本发明涉及一种金属焊接件复合材料,包括由钢板焊接而成的金属外壳和填充在所述金属外壳内的树脂混凝土；所述树脂混凝土的组分及质量百分比为：环氧树脂4%～8%,固化剂1%～4%,石英石50%～70%,石英砂8%～15%,石英粉6%～15%；所述树脂混凝土与金属外壳的质量比为2:1～3:1。本发明还涉及该金属焊接件复合材料的制备方法。本发明的金属焊接件复合材料弥补金属焊接件性能的不足,强度高,结构稳定耐用。(The invention relates to a metal welding part composite material, which comprises a metal shell formed by welding steel plates and resin concrete filled in the metal shell; the resin concrete comprises the following components in percentage by mass: 4-8% of epoxy resin, 1-4% of curing agent, 50-70% of quartz stone, 8-15% of quartz sand and 6-15% of quartz powder; the mass ratio of the resin concrete to the metal shell is 2: 1-3: 1. The invention also relates to a preparation method of the metal welding part composite material. The composite material for the metal welding part makes up the deficiency of the performance of the metal welding part, and has high strength, stable structure and durability.)

1. A metal weldment composite material characterized in that: the steel plate concrete composite material comprises a metal shell (1) formed by welding steel plates and resin concrete (2) filled in the metal shell (1); the resin concrete (2) comprises the following components in percentage by mass: 4-8% of epoxy resin, 1-4% of curing agent, 50-70% of quartz stone, 8-15% of quartz sand and 6-15% of quartz powder; the mass ratio of the resin concrete (2) to the metal shell (1) is 2: 1-3: 1.

2. The metal weldment composite of claim 1, wherein: the particle size of the quartz stone is 4-16 mm, the particle size of the quartz sand is 0.5-2 mm, and the particle size of the quartz powder is 0.01-1 mm.

3. The metal weldment composite of claim 1, wherein: the epoxy resin is glycidyl ether epoxy resin.

4. The metal weldment composite of claim 1, wherein: the curing agent is one or more of aromatic amine curing agent, polyether amine curing agent and alicyclic amine curing agent.

5. The metal weldment composite of claim 1, wherein: the metal shell (1) is formed by welding a bottom plate and side plates surrounding the bottom plate, and reinforcing ribs are welded inside the metal shell (1).

6. The preparation method of the metal welding part composite material is characterized by comprising the following steps of:

A. welding the steel plate into a metal shell (1);

B. filling resin concrete (2) in the inner cavity of the metal shell (1) for vibration tamping, wherein the resin concrete (2) comprises the following components in percentage by mass: 4-8% of epoxy resin, 1-4% of curing agent, 50-70% of quartz stone, 8-15% of quartz sand and 6-15% of quartz powder; the mass ratio of the resin concrete (2) to the metal shell (1) is 2: 1-3: 1;

C. curing and curing for 40-55 hours at normal temperature until the resin concrete (2) is cured.

7. The method of making a metal weldment composite according to claim 7, wherein: the particle size of the quartz stone is 4-16 mm, the particle size of the quartz sand is 0.5-2 mm, and the particle size of the quartz powder is 0.01-1 mm; the epoxy resin is glycidyl ether epoxy resin; the curing agent is one or more of aromatic amine curing agent, polyether amine curing agent and alicyclic amine curing agent.

8. The method of making a metal weldment composite according to claim 7, wherein: the metal shell (1) is formed by welding a bottom plate and side plates surrounding the bottom plate, and reinforcing ribs are welded inside the metal shell (1).

Technical Field

The invention relates to a metal welding part composite material and a preparation method thereof, belonging to the technical field of machine manufacturing.

Background

The traditional machine tool body and the large structural part of the machine tool are generally formed by sand casting, the cost is low, the production process is simple, the production period is short, although the wear resistance and the shock absorption are good, the casting defects such as shrinkage cavity, shrinkage porosity and the like can occur, and particularly, when a large casting is manufactured, the quality is not easy to guarantee.

The mineral casting is a novel high-filling composite material prepared by mixing and stirring natural stone as an aggregate and thermosetting resin as an adhesive, vibrating and compacting, and performing polymerization reaction and solidification. The vibration damping capacity of the mineral casting material is 6 to 8 times that of cast iron and is about 9 to 10 times higher than that of steel, and the higher the damping performance of the material is, the higher the machining precision is, so that the machine tool adopting the mineral casting bed body has good machining performance. The mineral casting material has good thermal stability because of its high specific heat but low thermal conductivity. Chinese patent document CN105776949A (application number: 201610069783.8) discloses a composite machine tool bed mineral casting based on cobblestones and a preparation method thereof, wherein the main components are cobblestones, quartz sand, epoxy resin and a curing agent, and the mineral casting is a typical mineral casting.

At present, the machine tool body is manufactured by adopting silicate cement steel fiber concrete, but the elastic modulus and the tensile strength of the material are only 1/4-1/5 of cast iron, and the material surface of the material cannot resist corrosion of cutting fluid, so that the material cannot be applied. Chinese patent document CN101913192A (application number: 201010247851.8) discloses a method for manufacturing a concrete machine tool bed structure, the machine tool bed structure is constructed by compounding two materials, the inner core material is portland cement steel fiber concrete, and the surface layer material is epoxy resin concrete, so as to solve the technical problem of manufacturing the machine tool bed by portland cement steel fiber concrete, but because the two materials are both inorganic materials, the mechanical properties of the compounded materials are still general.

Chinese patent document CN107935455A (application number: 201711202402. X) discloses a mineral casting machine tool frame and a preparation method thereof, wherein components of the mineral casting machine tool frame include granite sand, wollastonite, barite powder, modified epoxy resin and a curing agent, and thermoplastic polyurethane and reinforcing fibers are added, so that the mineral casting machine tool frame has excellent compressive strength, tensile strength and bending strength, and has good heat conductivity at high temperature, higher glossiness and long service life. But still inorganic materials are the main ones, and the performance improvement is limited.

Disclosure of Invention

The invention aims to provide a metal welding part composite material which makes up the defects of the performance of a metal welding part, has high strength and a stable and durable structure, and a preparation method of the metal welding part composite material.

The invention provides a technical scheme for solving the technical problems, and the composite material for the metal welding part comprises a metal shell formed by welding steel plates and resin concrete filled in the metal shell; the resin concrete comprises the following components in percentage by mass: 4-8% of epoxy resin, 1-4% of curing agent, 50-70% of quartz stone, 8-15% of quartz sand and 6-15% of quartz powder; the mass ratio of the resin concrete to the metal shell is 2: 1-3: 1.

The particle size of the quartz stone is 4-16 mm, the particle size of the quartz sand is 0.5-2 mm, and the particle size of the quartz powder is 0.01-1 mm.

The epoxy resin is glycidyl ether epoxy resin.

The curing agent is one or more of aromatic amine curing agent, polyether amine curing agent and alicyclic amine curing agent.

The metal shell is formed by welding a bottom plate and side plates surrounding the bottom plate, and reinforcing ribs are welded inside the metal shell.

The invention provides another technical scheme for solving the technical problems, and the preparation method of the metal welding part composite material comprises the following steps:

A. welding the steel plate into a metal shell;

B. filling resin concrete in the inner cavity of the metal shell, and vibrating and tamping the resin concrete, wherein the resin concrete comprises the following components in percentage by mass: 4-8% of epoxy resin, 1-4% of curing agent, 50-70% of quartz stone, 8-15% of quartz sand and 6-15% of quartz powder; the mass ratio of the resin concrete to the metal shell is 2: 1-3: 1;

C. curing and curing for 40-55 hours at normal temperature until the resin concrete is cured.

The particle size of the quartz stone is 4-16 mm, the particle size of the quartz sand is 0.5-2 mm, and the particle size of the quartz powder is 0.01-1 mm; the epoxy resin is glycidyl ether epoxy resin; the curing agent is one or more of aromatic amine curing agent, polyether amine curing agent and alicyclic amine curing agent.

The metal shell is formed by welding a bottom plate and side plates surrounding the bottom plate, and reinforcing ribs are welded inside the metal shell.

The invention has the positive effects that: the composite material of the metal welding part is welded into a metal shell by using steel plates, resin concrete is filled in the metal shell, and a mineral casting is formed by curing in the metal shell, so that the thermal expansion coefficient of the resin concrete is about 13 due to the strict control of the formula of the resin concrete, and the thermal expansion coefficient of the formed composite material is close to 12 due to the thermal expansion coefficient of the steel plates, and a stable filling structure can be formed. The composite material for the metal welding parts provided by the invention complements the performance advantages of the steel parts and the mineral castings, the density of the composite material is between that of the iron-based metal and the mineral castings, the heat conductivity coefficient and the damping property are consistent with those of resin concrete, and the defect of poor tensile strength of the mineral castings is overcome. Because the resin concrete is filled, the structural member has high integral strength, stable structure and good rigidity consistency; the welding defects, stress concentration and the like of the metal shell can not generate adverse effects. The metal welding part composite material is suitable for manufacturing important bearing structural parts of large-scale machine tools, greatly ensures the quality of the machine tool structural parts under the condition of increasing limited weight, and has stable performance and long service life.

Drawings

The metal welding part composite material and the preparation method thereof are further explained with reference to the attached drawings.

Fig. 1 is a schematic structural view of a metal weldment composite material according to embodiment 1 of the present invention.

Detailed Description