CN111848109A

CN111848109A - Inorganic material and manufacturing process for preparing inorganic material reinforcing rib by using same

Info

Publication number: CN111848109A
Application number: CN202010739688.0A
Authority: CN
Inventors: 高凤喜; 游南来
Original assignee: Guangdong Wholetops Building Materials Industry Co ltd
Current assignee: Guangdong Wholetops Building Materials Industry Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-30

Abstract

The invention provides an inorganic material and a manufacturing process for preparing an inorganic material reinforcing rib, wherein the inorganic material comprises magnesium oxide with the weight of W; 85% W is prepared into a 30 DEG Be solution by MgSO 4; 1-1.5% W of a modifier; 10% W sawn wood tips; 700cm3/1000g MgO vitrified micro bubbles, 1% W polypropylene fiber. The application of the inorganic material reinforcing rib technology has great market potential and development prospect, completely breaks through the application bottleneck that the traditional reinforcing rib is unchanged for many years, thoroughly eliminates the phenomenon of 'nail-off', and avoids the embarrassment that the product is unpacked and the 'nail-off' is found after reaching a construction site. The method provides reliable installation and use guarantee for the application of the anodic aluminum oxide plate, completely avoids point stress, and realizes the whole stress and force transmission of the reinforcing rib. The production process of a production enterprise can be changed, the production efficiency is improved, the personnel organization is reduced, the production process is integrated into the process of the flexible production line for processing the aluminum alloy sheet metal, and the automatic production is realized.

Description

Inorganic material and manufacturing process for preparing inorganic material reinforcing rib by using same

Technical Field

The invention relates to the field of metal building decoration materials, in particular to an inorganic material and a manufacturing process and application thereof for preparing an inorganic material reinforcing rib.

Background

Aluminum alloy curtain wall panels and ceiling decorative panels have been in commercial use for many years and are in development, and are widely used for decoration of public building facilities and functional buildings. The aluminum alloy plate has the characteristics of excellent fire resistance, moisture resistance, mildew resistance, insect resistance, light rigidity, easiness in processing, environmental friendliness, recyclability and the like, so that the aluminum alloy plate is widely used. Particularly, in the traffic field of rapid development in China, projects such as airports, subways, high-speed rails, large exhibition halls and the like are decorated by using a large amount of aluminum alloy plates.

There is a fitting, a stiffener, that must be used in aluminum alloy sheet applications.

The reinforcing ribs play an indispensable role in the application of the aluminum alloy decorative plate, provide rigid support for a large-size aluminum alloy plate surface and improve the guarantee of the flatness of the plate surface.

The reinforcing ribs are mainly made of U-shaped aluminum materials and are arranged and fixed on the back of the aluminum alloy plate at certain intervals, and the fixing mode is that a special capacitance type discharge stud welding machine is used for welding special cylindrical head welding nails (GB/T10433-2002) for arc studs on the back of the aluminum alloy plate to fix the reinforcing ribs, so that the improvement of the flatness of the plate surface and the increase of the rigidity are formed.

The capacitive discharge stud welding process technology is developed and applied for many years, forms a corresponding national technical standard, and is widely applied to various fields of building structures, bridge construction, metal structures, shipbuilding, mechanical manufacturing, locomotive manufacturing, metal workpieces and the like.

Stud welding has a number of advantages, in particular irreplaceable advantages in terms of welding time, welding position and welding implementation. Therefore, the method is widely applied to the processing of aluminum alloy curtain wall plates and aluminum alloy ceiling board products.

The stud welding technology has great superiority, which is concretely as follows:

1. the method has the advantages of economy, low production cost, short welding time, instant completion and great improvement on welding work efficiency;

2. single-side welding, no welding wire, no deslagging and polishing; the heat affected area is small, and the workpiece is not easy to deform;

3. the welding trace is small, and the back of the workpiece has no trace or only a small welding trace and is related to the thickness of the material;

4. the welding strength is high, when the full section of the welding seam is fused, the strength of the welding part is higher than that of the welding bolt,

even if the bolt is broken, the bolt cannot be broken from the welding surface;

5. the operation is simple, and the operation is easy.

The aluminum alloy curtain wall plate and the ceiling plate use the stud welding technology and the reinforcing rib technology, which is already known as the convention! In particular, anodized aluminum panels are more purely dependent on stud welding techniques and reinforcing bar techniques.

In order to overcome the defects of the aluminum alloy surface coating in the aspects of hardness, wear resistance and the like, expand the application range and prolong the service life of an aluminum alloy plate, the anodic oxidation technology is usually adopted in engineering to greatly improve the surface performance of an aluminum alloy product, and the process is the most stable process for the surface characteristics of the aluminum alloy decoration at present.

But because the characteristics of the anodic aluminum oxide plate are different from the characteristics of the traditional aluminum alloy curtain wall plate, the edge can be folded, and the installation angle code of the plate can be fixed on the folded edge or the reinforcing rib. The anodic aluminum oxide plate product can not adopt a flanging process, but only can be fixed on the back of the anodic aluminum oxide plate by selecting different aluminum profiles according to the stress and installation requirements through a stud welding technology to serve as a framework and a reinforcing rib, so that the requirements on the flatness of the plate surface, the integral rigidity and the installation stress point are met.

The installation stress of the whole anodic aluminum oxide plate is realized by welding screws on the back of the anodic aluminum oxide plate by using a stud welding technology, fixing special aluminum alloy section hooks on the back of the aluminum plate by using the stud welding nails, and then hanging the special aluminum alloy section hooks on a special hanging system.

In order to avoid edge folding when the product is used without damaging the anodic oxide layer on the surface of the anodic oxide aluminum plate, and simultaneously, hoisting or installation accessories are not allowed to be added through welding, so that the anodic oxide layer is prevented from being damaged by the high temperature of welding.

As can be seen from this construction, the weight of the entire anodized aluminum plate is borne entirely by the stud-welded screws.

The application of the anodic aluminum oxide plate on the outer curtain wall plate also depends on the bolts welded by the studs to bear various loads such as dead weight, positive and negative wind pressure and the like. Reminding people to pay attention to the reliability of the stud welding screw. (since the nodes are similar, the illustration is not repeated here)

These applications bring us with some problems: whether a screw welded by stud is 100% safe and reliable under these conditions. Of course, there are theoretical and practical results to support for such applications, such as many tests and examinations of stud-welded screws, and reliable data support for both the application process and conditions, thereby establishing a basis for the reliability of their applications. In addition, in order to overcome some uncertain factors and ensure safety and reliability, the reinforcing rib systems on the back of the products are often required to be very complicated, connected and assisted by each other, so that the cost of the reinforcing rib systems and the labor cost are greatly increased.

However, in the practical application of the aluminum alloy curtain wall plate, the situation that the screw welded by the stud is frequently stripped from the wall cannot be avoided, and potential safety hazards in the use of the product are caused.

The reason for this is exactly what. What measures to take can completely solve the hidden troubles.

Analysis of the above problems

Nail-off phenomenon

The use of stud welding techniques in the processing of aluminum alloy curtain wall panels, aluminum alloy ceiling tiles, anodized aluminum panels, and other products still has some uncertain factors that often reflect on the phenomenon of "nail removal".

The so-called nail-removing is the phenomenon that the screw welded on the back of the aluminum alloy curtain wall plate or the aluminum alloy ceiling board product by the stud welding technology is broken off by 'welding-removing' in the processes of carrying, installing, maintaining and the like, and the quality of the plate surface and the reliability of stress can be directly influenced after the stud is broken off by welding-removing.

The reason for causing the desoldering of the stud welding screw is many, and a lot of uncertain factors exist.

The problems of stud material and quality are as follows: impurities in stud materials and quality may affect welding quality;

the aluminum plate material problem: non-uniformity of impurity content in the sheet material may affect the welding quality;

the problem of surface oil stain: the oil stain on the surface of the plate affects the point discharge during welding and may affect the welding quality:

current-voltage problems: the welding quality is directly influenced by improper setting of current and voltage, and the welding quality is influenced by bad contact of the ground wire;

the vertical problem of the hand-held nail gun: when the nail gun is used, the verticality is not enough, and the welding quality is influenced by the inclination of the stud;

the problem of the gunpower of the pressed nail: insufficient downforce and incomplete melting of the molten pool can affect the welding quality.

The stud welding screw is mature in technology and wide in application, and a lot of measures are taken for the 'nail-off' phenomenon, for example, the nail welding test is carried out on each batch of materials, and the test items are as follows: knocking, bending, torque and the like to obtain more accurate setting parameters, but still cannot avoid the phenomenon of nail removal, which still happens occasionally.

In the application of the reinforcing rib, the phenomenon that the use effect is influenced due to looseness caused by poor fixing of the reinforcing rib also exists.

The burr like strengthening rib screw fixed orifices probably influences the fixed quality that the nut was screwed up, and the uneven effect that can cause the uneven nut pressure of nut to paste tight face of strengthening rib also can be caused to the gasket thickness.

(II) eight steps for installing reinforcing ribs

1. Selecting reinforcing ribs with different specifications according to the specification of a drawing;

2. cutting reinforcing ribs according to the length required by plates of different specifications;

3. punching screw holes on the reinforcing ribs on a punch according to different lengths and different hole distances;

4. taking an aluminum alloy plate to remove oil stains on the back part of the welding nail;

5. placing the reinforcing ribs according to a drawing;

6. welding a screw at the position of each hole by using a stud welding machine;

7. placing a flat gasket, an elastic pad and a pre-screwed nut on the screw;

8. and screwing the nut by using a nut screwdriver.

The installation of the reinforcing ribs is finally completed through eight steps, and the process is completed:

(III) stress of welding nail in use of aluminum reinforcing rib

1. The reinforcing ribs are fixed on the back of the aluminum alloy curtain wall plate or the ceiling plate through the welding nails, the plate surface is flattened through the rigidity of the reinforcing ribs, and the force for flattening the plate surface is from the screws welded on each reinforcing rib. This result means that the screws welded to the back of the plate are subjected to all the constantly changing forces of the surface from the moment they are welded to the back of the plate. Especially in regions with large variations in wind power and high seasonal wind power.

The stress of the welding nails caused by the periodically changing force and seasonal turbulent wind power is greatly influenced, and the board surface continuously transmits large-area force generated by positive and negative wind pressure on the surface to each welding nail, so that the force continuously received by the welding nail is transmitted to the reinforcing ribs through points, and then the force is transmitted to the board surface through the reinforcing ribs to overcome the deformation force of the board surface.

For those projects which need to realize the mounting and fixing of the curtain wall panel surface through the reinforcing ribs, for example, the requirement of the mounting of the anodic aluminum oxide plate on the welding nail is higher, and the conditions are more severe. The welding nails can not only ensure the flatness of the aluminum plate surface, but also meet the stress requirements of bearing the self weight of the whole aluminum plate and mounting and fixing, and simultaneously bear larger stress generated by internal and external wind force applied to the aluminum plate surface.

The wind force of nature is often a non-trivial amount! Especially, modern buildings are always at a certain height, the turbulence phenomenon of wind power is more serious at higher places, and the impact force on the aluminum alloy decoration panel is larger.

And seashore buildings are also often influenced by marine climate, so that the decorative external wall panels of the buildings are influenced by various wind power.

All the external forces from the nature are applied to the decorative plate of the building outer wall for a long time, if the aluminum alloy curtain wall plate is used for decoration, the external forces are applied to the reinforcing ribs for a long time, and the final forces are transmitted to the welding nails through the reinforcing ribs.

Thus, the straightening function of the reinforcement is actually transferred to the nail. The invention aims to solve the problem and really realize the value of the reinforcing rib.

(IV) common specification of aluminum reinforcing rib

The conventional aluminum reinforcing ribs are generally U-shaped in cross section and also have special requirements on the pi-shaped cross section, and the reinforcing ribs with different cross section sizes are mainly selected according to different requirements of projects.

The section specifications of the conventional aluminum reinforcing rib are as follows: 20 x 40, 25 x 50, 50 x 50, etc., with some variation in thickness; the higher requirements for stiffness will result in the use of larger size ribs or pi-type ribs.

The reinforcing ribs are usually laid according to the size of the plate surface, the number of welding nails required on each reinforcing rib is determined, and the current and voltage values required by the welding nails are determined according to the thickness of the plate.

After discussing and analyzing the use and implementation process technology of the existing aluminum reinforcing rib, how to eliminate the potential safety hazard in the use process is considered, and uncertain factors influencing the reliability can be completely eliminated while the flatness and the rigidity of the plate surface are improved; meanwhile, the process steps of reinforcing rib implementation can be simplified, the production efficiency is improved, the processing technology of the aluminum alloy plate is changed, and the aluminum alloy plate is combined with the heat-insulation fireproof foaming technology and applied in other directions to form the target of the invention.

Disclosure of Invention

The invention aims to completely break through the application bottleneck that the traditional reinforcing rib is unchanged for years, completely eliminate the phenomenon of nail falling and avoid the dilemma that the product is unpacked after reaching a construction site and the nail falling is found. The method provides reliable installation and use guarantee for the application of the anodic aluminum oxide plate, completely avoids point stress, and realizes the whole stress and force transmission of the reinforcing rib. The production process of the inorganic material reinforcing rib can be changed by a production enterprise, the production efficiency is improved, the personnel organization is reduced, the inorganic material reinforcing rib is integrated into the flexible production line process for processing the aluminum alloy sheet metal, the automatic production is realized, and the manufacturing process of the inorganic material reinforcing rib

The technical scheme adopted by the invention is as follows: an inorganic material comprising magnesium oxide in a weight W; 85% W is prepared into a 30 DEG Be solution by MgSO 4; 1-1.5% W of a modifier; 10% W sawn wood tips; 700cm3/1000g MgO vitrified micro bubbles, 1% W polypropylene fiber.

The magnesium oxide is magnesium oxide with the content of more than 85%, and the magnesium oxide is composed of more than 60% -100% of active MgO and less than 0% -40% of inactive MgO.

The modifier is prepared by mixing water, phosphoric acid, trisodium phosphate, citric acid, EDTA disodium, triethanolamine and methyl cellulose.

The water content of the sawn timber tip is less than 15%.

The vitrified micro bubbles are 20-50 meshes of vitrified micro bubbles.

The length of the polypropylene fiber is 1-1.5 cm.

The glass fiber cloth is medium-alkali mesh cloth of 70 g-100 g/cm 2.

The process of claim 1, wherein the inorganic material is prepared into an inorganic material reinforcing rib, the process comprises the following steps:

step one, manufacturing a mold according to the shape of the reinforcing rib (the cross section of the mold is T-shaped, U-shaped or L-shaped);

step two, coating mold oil on the mold;

weighing MgO and polypropylene fiber according to the proportion of the inorganic material, and putting the MgO and the polypropylene fiber into a stirring barrel to stir for 2 minutes;

adding the weighed MgSO4 solution and the modifier into a stirring barrel according to the proportion of the inorganic material, and continuously stirring for 3 minutes;

step five, weighing sawn timber tips and the vitrified micro bubbles according to the proportion of the inorganic materials, adding the sawn timber tips and the vitrified micro bubbles into a stirring barrel, and continuously stirring for 5 minutes to form slurry;

step six, pouring the slurry obtained in the step five into a mould, and placing a layer of glass fiber cloth on the mould to roll and flatten the glass fiber cloth through equipment;

and seventhly, curing in the mold for 12-24 hours, demolding after complete curing to form the inorganic material reinforcing ribs, stacking the demolded inorganic reinforcing ribs together, and continuing curing for 7 days, wherein the humidity of a curing field is not less than 75% RH.

The density of the inorganic material reinforcing ribs is controlled to be 1.3-1.5 g/cm 3.

The invention has the beneficial effects that: the inorganic material reinforcing rib can meet all functional requirements of the existing aluminum reinforcing rib, and more importantly, the situation that all original stress acts on a plurality of welding nails is thoroughly improved by using the inorganic material reinforcing rib, so that the stress of the whole reinforcing rib is changed into the surface stress of the whole reinforcing rib, and the stress situation of the reinforcing rib is greatly improved.

The inorganic reinforcing rib is uniformly stressed, so that the bending strength and the impact strength of the plate king material can be exerted to the maximum extent, and particularly, the application of the inorganic reinforcing rib to the structure of an anodized aluminum plate greatly improves the safety and the reliability of a system. The whole stress of the decorative plate is changed from point to surface to be qualitatively improved.

The inorganic material reinforcing rib provided by the invention has the nail-holding power and the material density, can effectively fix various pendants, and can even simulate the installation of an aluminum plate system by using installation nodes of dry-hanging stone materials with mature markets.

The application of the inorganic material reinforcing rib greatly simplifies the processing technology of the reinforcing rib, simplifies the original multiple processes into three processes, does not need welding nails, placing gaskets, screwing nuts and the like, greatly improves the production efficiency, reduces manpower and material resources, and creates a larger profit margin for enterprises.

The application of the inorganic material reinforcing rib technology has great market potential and development prospect, completely breaks through the application bottleneck that the traditional reinforcing rib is unchanged for many years, thoroughly eliminates the phenomenon of 'nail-off', and avoids the embarrassment that the product is unpacked and the 'nail-off' is found after reaching a construction site. The method provides reliable installation and use guarantee for the application of the anodic aluminum oxide plate, completely avoids point stress, and realizes the whole stress and force transmission of the reinforcing rib. The production process of a production enterprise can be changed, the production efficiency is improved, the personnel organization is reduced, the production process is integrated into the process of the flexible production line for processing the aluminum alloy sheet metal, and the automatic production is realized.

Drawings

Fig. 1 is a schematic structural view of an inorganic reinforcing bar according to the present invention in a specific application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated based on an orientation or positional relationship shown, but for convenience and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The present invention will now be described with respect to an inorganic material comprising magnesium oxide in a weight amount W; 85% W is prepared into a 30 DEG Be solution by MgSO 4; 1-1.5% W of a modifier; 10% W sawn wood tips; 700cm3/1000g MgO vitrified micro bubbles, 1% W polypropylene fiber.

Furthermore, the magnesium oxide is magnesium oxide with the content of more than 85%, and the magnesium oxide is composed of more than 60% -100% of active MgO and less than 0% -40% of inactive MgO.

Further, the modifier is formed by mixing water, phosphoric acid, trisodium phosphate, citric acid, EDTA disodium, triethanolamine and methyl cellulose.

The sawn wood tips have a water content of less than 15% and must not have rotten components.

The vitrified micro bubbles are 20-50 meshes of vitrified micro bubbles.

The length of the polypropylene fiber is 1-1.5 cm.

The glass fiber cloth is medium-alkali mesh cloth of 70 g-100 g/cm 2.

A manufacturing process for preparing an inorganic material reinforcing rib by using an inorganic material comprises the following steps:

step two, coating mold oil on the mold, and placing a layer of glass fiber cloth;

weighing MgO and polypropylene fiber according to the proportion of the inorganic materials, and putting the MgO and the polypropylene fiber into a stirring barrel to stir for 2 minutes;

adding the MgSO4 solution and the modifier weighed according to the proportion of the inorganic materials into a stirring barrel, and continuously stirring for 3 minutes;

step five, weighing sawn wood tips and the vitrified micro bubbles according to the proportion of the inorganic materials, adding the sawn wood tips and the vitrified micro bubbles into a stirring barrel, and continuously stirring for 5 minutes to form slurry;

Further, the density of the inorganic material reinforcing ribs is controlled to be 1.3-1.5 g/cm 3;

the inorganic material of the present invention is an air-hardening material (which can be hardened only in air), so care needs to be taken.

Firstly, the section shape of the reinforcing rib is designed according to the characteristics of the reinforcing rib made of inorganic materials, then the reinforcing rib made of inorganic materials is produced and processed by a special process, the reinforcing ribs can be designed into different shapes and sizes which are most beneficial to meeting the requirements of a plate surface according to different requirements of different projects, and the reinforcing ribs are flexibly produced and processed for standby according to the requirements.

The sections of the reinforcing ribs made of different inorganic materials are designed according to different use conditions, and the plate surface which only plays the role of the reinforcing rib often uses a T-shaped or U-shaped section; the L-shaped section is designed specially for fixing the hanging piece and is suitable for the project of the anode alumina plate.

The combination mode of inorganic material strengthening rib and aluminum plate does not adopt the welding nail technology, but uses the high temperature glue of very ripe now to come to realize, along with the improvement of chemical technology, the characteristic of high temperature glue in the market has been very outstanding now, can satisfy the operation requirement of inorganic material strengthening rib completely and satisfy the production technology requirement.

As shown in figure 1, M5 adjusting bolt 10, bearing keel 20, tiger-tooth pendant 30, positioning keel 40, T-shaped aluminum section keel 50, special aluminum alloy pendant 60, 1.5mm pendant 70, inorganic material reinforcing rib 80 (T-shaped is not shown in the figure, and the cross section can be U-shaped, L-shaped or other shapes according to actual conditions.)

As shown in figure 1, the inorganic material reinforcing rib can meet all functional requirements of the existing aluminum reinforcing rib, and more importantly, the situation that all original stress acts on a plurality of welding nails is thoroughly improved by using the inorganic material reinforcing rib, so that the stress of the whole reinforcing rib is changed into the surface stress of the whole reinforcing rib, and the stress situation of the reinforcing rib is greatly improved.

The application of the inorganic material reinforcing rib greatly simplifies the processing technology of the reinforcing rib, simplifies the original multiple processes into three processes, does not need welding nails, placing gaskets and screwing nuts and the like, greatly improves the production efficiency, reduces manpower and material resources, and creates a larger profit margin for enterprises.

The embodiment of the present invention is merely to illustrate the design concept of the present invention, and the protection scope of the present invention should not be limited to this embodiment.

It is to be understood that the invention has been designed with an enabling description and that it is capable of being embodied in various forms and that it forms a part of the specification that includes all equivalent constructions.

Accordingly, the claims hereof are to be construed to include other equivalent implementations, the scope of which is to be determined by reference to the claims.

Claims

1. An inorganic material, characterized in that it comprises magnesium oxide in a weight W; 85% W is prepared into a 30 DEG Be solution by MgSO 4; 1-1.5% W of a modifier; 10% W sawn wood tips; 700cm3/1000g MgO vitrified micro bubbles, 1% W polypropylene fiber.

2. The inorganic material of claim 1, wherein the magnesium oxide is magnesium oxide with a content of 85% or more, and the magnesium oxide is composed of 60% to 100% or more of active MgO and 0% to 40% or less of inactive MgO.

3. The inorganic material of claim 1, wherein the modifier is a mixture of water, phosphoric acid, trisodium phosphate, citric acid, disodium EDTA, triethanolamine, and methyl cellulose.

4. An inorganic material as in claim 1, wherein said sawblade tip has a moisture content of less than 15%.

5. The inorganic material according to claim 1, wherein the vitrified small balls are 20 to 50 mesh vitrified small balls.

6. The inorganic material of claim 1, wherein the polypropylene fibers have a fiber length of 1 to 1.5 cm.

7. The inorganic material of claim 1, wherein the glass fiber cloth is a medium alkali mesh cloth of 70g to 100g/cm 2.

8. The process of claim 1, wherein the inorganic material is prepared into an inorganic material reinforcing rib, the process comprises the following steps:

9. The process for manufacturing the inorganic material reinforcing rib according to claim 8, wherein the density of the inorganic material reinforcing rib is controlled to be 1.3-1.5 g/cm 3.