WO2016119093A1

WO2016119093A1 - Environmentally friendly lead-free novel alloy material pipe and preparation method therefor

Info

Publication number: WO2016119093A1
Application number: PCT/CN2015/000856
Authority: WO
Inventors: 王青
Original assignee: 苏州金仓合金新材料有限公司
Priority date: 2015-01-27
Filing date: 2015-12-04
Publication date: 2016-08-04
Also published as: CN104630553A

Abstract

An environmentally friendly lead-free novel alloy material pipe and a preparation method therefor. The alloy material pipe consists of the following components: zinc accounting for 1%-3% of the total weight of the alloy material pipe, tin accounting for 1%-3% of the total weight of the alloy material pipe, aluminum accounting for 0.5%-2.5% of the total weight of the alloy material pipe, antimony accounting for 0.05%-0.5% of the total weight of the alloy material pipe, and silicon accounting for 0.5%-1% of the total weight of the alloy material pipe, with the balance being copper. By replacing the traditional lead element with the silicon element, and according to a certain composition proportion of the zinc, tin, aluminum, antimony, silicon and copper, a pipe material that can completely replace a tin bronze-containing lead element is produced by continuously casting at an appropriate temperature to form a blank tube and extruding the blank tube with an extruder; therefore, not only are the mechanical performances of the existing tin bronze, such as cutability, maintained, but the requirement for the environmentally friendly performance of the alloy is also satisfied without increasing the cost.

Description

Environmentally friendly lead-free new alloy material tube and preparation method thereof

Technical field

The invention relates to the field of alloy pipes, in particular to an environmentally friendly lead-free new alloy material pipe and a preparation method thereof.

Background technique

Existing tin bronze materials tend to add lead in order to achieve their easy chipping performance, but with the increasing awareness of environmental protection, bronze alloys containing lead elements can no longer meet the requirements of high-end markets at home and abroad.

Summary of the invention

The object of the present invention is to provide an environmentally friendly lead-free new alloy material tube and a preparation method thereof, which not only retains the mechanical properties such as chips of the existing tin bronze but also satisfies the environmental performance of the alloy without increasing the cost. Requirements.

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

An environmentally friendly lead-free new alloy material tube consisting of the following components: zinc 1-3% of the total weight of the alloy material tube, tin 1-3% of the total weight of the alloy material tube, and 0.5-% of the total weight of the alloy material tube 2.5% of aluminum, which accounts for 0.05-0.5% of the total weight of the alloy material tube, accounts for 0.5-1% of the total weight of the alloy material tube, and the balance is copper.

Preferably, it is composed of: zinc which accounts for 1% of the total weight of the alloy material tube, tin which accounts for 1% of the total weight of the alloy material tube, and aluminum which accounts for 0.5% of the total weight of the alloy material tube, which accounts for 0.05% of the total weight of the alloy material tube The crucible, which accounts for 0.5% of the total weight of the alloy material tube, has the balance of copper.

Preferably, it consists of: 2% of the total weight of the alloy material tube, 2% of the total weight of the alloy material tube, 1.5% of the total weight of the alloy material tube, and 0.25% of the total weight of the alloy material tube. The crucible, which accounts for 0.75% of the total weight of the alloy material tube, is the balance of copper.

Preferably, it consists of zinc which accounts for 3% of the total weight of the alloy material tube, and accounts for the alloy material. The total weight of the tube is 3% of tin, which accounts for 2.5% of the total weight of the alloy material tube, 0.5% of the total weight of the alloy material tube, and 1% of the total weight of the alloy material tube. The balance is copper.

Preferably, it is composed of: zinc which accounts for 1% of the total weight of the alloy material tube, tin which accounts for 1% of the total weight of the alloy material tube, and aluminum which accounts for 2.5% of the total weight of the alloy material tube, which accounts for 0.5% of the total weight of the alloy material tube The crucible, which accounts for 1% of the total weight of the alloy material tube, is the balance of copper.

Preferably, it consists of: 2% zinc of the total weight of the alloy material tube, 3% of the total weight of the alloy material tube, 0.5% of the total weight of the alloy material tube, and 0.05% of the total weight of the alloy material tube. The crucible, which accounts for 0.5% of the total weight of the alloy material tube, has the balance of copper.

Further, the copper is electrolytic copper.

A method for preparing an environmentally friendly lead-free new alloy material tube, comprising the following steps:

1) Place zinc, tin, aluminum, tantalum, silicon and copper in a power frequency electric furnace according to the ratio, heat to 1250-1300 degrees Celsius, and keep warm to 1200 degrees Celsius after being completely melted;

2) using a special graphite tool to fully stir the completely molten alloy liquid, and then covering it with high-purity flaky graphite powder to prevent oxidation thereof, the thickness is 11-13 cm;

3) After 1.2-1.5 hours of heat preservation, the sample taken out from the furnace is subjected to component inspection by a spectrometer to determine that the alloy composition is within the specified range;

4) After further heat preservation for 40-60 minutes, the temperature is raised again to 1300 degrees Celsius, and the vibration device of the power frequency electric furnace is turned on, the vibration frequency is 1 time/second, and the hollow blank alloy material tube of the specified size is cast by the horizontal continuous casting method;

5) Annealing before extrusion, annealing the alloy material tube with an annealing furnace: annealing temperature is 200-300 degrees Celsius, annealing time is 20-30 minutes, to facilitate extrusion;

6) Surface processing of the annealed blank alloy material tube by an optical spindle machine, processing into an alloy material tube of a predetermined size, and extruding by an extruder, the alloy ingot heating temperature is 100-150 degrees Celsius, and the extrusion temperature is 300 degrees Celsius. , the extrusion speed V=2mm/s, after multiple extrusions to obtain the finished product;

7) The extruded alloy material tube is subjected to cracking and stomatal flaw detection by an ultrasonic flaw detector to pick out the unqualified product and return to the furnace;

8) Surface turning of the alloy material pipe after the flaw detection is completed with a high-precision lathe A tube of alloy material of a constant size and length, and deburring and packing the ends of the tube of the alloy material into the reservoir.

Further, the spectrometer in step 3) employs a Spike direct reading spectrometer.

Further, the number of component inspections in step 3) is 3-5 times.

The invention has the beneficial effects that the invention provides an environmentally friendly lead-free new alloy material tube and a preparation method thereof, which replaces the traditional lead element with silicon element, and according to the certain formation of zinc, tin, aluminum, antimony, silicon and copper. The distribution ratio, the appropriate temperature, is continuously cast into the blank tube and extruded by an extruder to produce a tin bronze tube that can completely replace the lead element, thereby not only retaining the existing tin bronze without increasing the cost. Mechanical properties such as chips also meet the environmental performance requirements of the alloy.

detailed description

The invention is further illustrated by the following examples, but does not limit the scope of application of the invention.

Example 1

An environmentally friendly lead-free new alloy material tube consisting of the following components: zinc, which accounts for 1% of the total weight of the alloy material tube, and tin, which accounts for 1% of the total weight of the alloy material tube, accounts for 0.5% of the total weight of the alloy material tube, accounting for 0.5% of the total weight of the alloy material tube. The alloy material has a total weight of 0.05% bismuth, accounting for 0.5% of the total weight of the alloy material tube, and the balance is copper.

According to the above ratio, the zinc, tin, aluminum, antimony, silicon and electrolytic copper are placed in a power frequency electric furnace, heated to 1250-1300 degrees Celsius, completely melted and then insulated to 1200 degrees Celsius; the fully melted alloy liquid is thoroughly stirred by a special graphite tool. After that, it is covered with high-purity flaky graphite powder to prevent oxidation thereof, and the thickness is 11-13 cm; after 1.2-1.5 hours of incubation, the sample taken from the furnace is used for three to five times with a Spike direct reading spectrometer imported from Germany. Sub-component test to determine the alloy composition within the specified range; after further heat preservation for 40-60 minutes, re-heating to 1300 degrees Celsius, and start the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / sec, using horizontal continuous casting The method was cast into a hollow blank alloy material tube with an outer diameter of 220 mm, an inner diameter of 180 mm and a length of 500 mm; annealing before extrusion, annealing the alloy material tube with a box annealing furnace: annealing temperature of 200-300 degrees Celsius, annealing Time is 20-30 minutes for easy extrusion; annealing with an optical spindle After the surface processing of the blank alloy material tube, the alloy material tube with a surface smooth diameter of 215 mm, an inner diameter of 185 mm and a length of 500 mm is extruded by a 2000-ton double-action extruder, and the heating temperature of the alloy ingot is 100-150 degrees Celsius. The extrusion temperature is 300 degrees Celsius, the extrusion speed is V=2mm/s, and the alloy material tube diameter is 200mm after multiple extrusions, the tolerance is +/-1mm, the inner diameter is 190mm, and the tolerance is +/-1mm; The extruded alloy material tube is subjected to cracking and stomatal flaw detection by ultrasonic flaw detector to pick out the unqualified product for re-baking; the surface of the alloy rod after the flaw detection is turned by a high-precision lathe to make the diameter of 198 mm, the tolerance is +/- 0.1 mm, inner diameter of 191 mm, tolerance of +/- 0.1 mm, after cutting to a length of 200 mm, the ends of the alloy material tube are deburred and packaged into the warehouse.

Compared with the existing lead-containing tin bronze alloy, the environmentally friendly lead-free new alloy material tube provided by the embodiment not only retains the mechanical properties such as the chip of the existing tin bronze, but also satisfies the requirements for environmental performance.

Example 2

An environmentally friendly lead-free new alloy material tube consisting of the following components: 2% of the total weight of the alloy material tube, 2% of the total weight of the alloy material tube, and 1.5% of the total weight of the alloy material tube. The total weight of the alloy material tube is 0.25%, and the silicon is 0.75% of the total weight of the alloy material tube. The balance is copper.

According to the above ratio, the zinc, tin, aluminum, antimony, silicon and electrolytic copper are placed in a power frequency electric furnace, heated to 1250-1300 degrees Celsius, completely melted and then insulated to 1200 degrees Celsius; the fully melted alloy liquid is thoroughly stirred by a special graphite tool. After that, it is covered with high-purity flaky graphite powder to prevent oxidation thereof, and the thickness is 11-13 cm; after 1.2-1.5 hours of incubation, the sample taken from the furnace is used for three to five times with a Spike direct reading spectrometer imported from Germany. Sub-component test to determine the alloy composition within the specified range; after further heat preservation for 40-60 minutes, re-heating to 1300 degrees Celsius, and start the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / sec, using horizontal continuous casting The method was cast into a hollow blank alloy material tube with an outer diameter of 220 mm, an inner diameter of 180 mm and a length of 500 mm; annealing before extrusion, annealing the alloy material tube with a box annealing furnace: annealing temperature of 200-300 degrees Celsius, annealing The time is 20-30 minutes for the extrusion; the surface of the annealed blank alloy material tube is processed by an optical spindle machine, and the surface is smooth and the diameter is 215 mm. The alloy material tube with a diameter of 185mm and a length of 500mm is extruded by a 2000-ton double-action extruder. The heating temperature of the alloy ingot is 100-150 degrees Celsius, the extrusion temperature is 300 degrees Celsius, and the extrusion speed is V=2mm/s. After extrusion, the alloy material tube diameter is 200mm, the tolerance is +/-1mm, the inner diameter is 190mm, and the tolerance is +/-1mm. The extruded alloy material tube is cracked and vented by ultrasonic flaw detector. The unqualified product is picked out for furnace recovery; the alloy rod after the flaw detection is surface-turned with a high-precision lathe to have a diameter of 198 mm, a tolerance of +/- 0.1 mm, an inner diameter of 191 mm, and a tolerance of +/- 0.1 mm. After cutting to a length of 200 mm, both ends of the alloy material tube are deburred and packaged into the warehouse.

Example 3

The utility model relates to an environment-friendly lead-free new alloy material tube, which is composed of the following components: zinc which accounts for 3% of the total weight of the alloy material tube, tin which accounts for 3% of the total weight of the alloy material tube, and aluminum which accounts for 2.5% of the total weight of the alloy material tube, accounting for The alloy material has a total weight of 0.5% bismuth, accounting for 1% of the total weight of the alloy material tube, and the balance is copper.

According to the above ratio, the zinc, tin, aluminum, antimony, silicon and electrolytic copper are placed in a power frequency electric furnace, heated to 1250-1300 degrees Celsius, completely melted and then insulated to 1200 degrees Celsius; the fully melted alloy liquid is thoroughly stirred by a special graphite tool. After that, it is covered with high-purity flaky graphite powder to prevent oxidation thereof, and the thickness is 11-13 cm; after 1.2-1.5 hours of incubation, the sample taken from the furnace is used for three to five times with a Spike direct reading spectrometer imported from Germany. Sub-component test to determine the alloy composition within the specified range; after further heat preservation for 40-60 minutes, re-heating to 1300 degrees Celsius, and start the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / sec, using horizontal continuous casting The method was cast into a hollow blank alloy material tube with an outer diameter of 220 mm, an inner diameter of 180 mm and a length of 500 mm; annealing before extrusion, annealing the alloy material tube with a box annealing furnace: annealing temperature of 200-300 degrees Celsius, annealing The time is 20-30 minutes for easy extrusion; the surface of the annealed blank alloy material tube is processed by an optical spindle machine, and the surface is smooth and has a diameter of 215 mm and an inner diameter of 185 mm. 500mm length of the alloy tube, the use of double-action 2000 t Extruder, The alloy ingot is heated at a temperature of 100-150 degrees Celsius, the extrusion temperature is 300 degrees Celsius, and the extrusion speed is V=2 mm/s. After multiple extrusions, the diameter of the alloy material tube is 200 mm, the tolerance is +/- 1 mm, and the inner diameter is 190 mm. Finished product with a tolerance of +/-1mm; the extruded alloy material tube is cracked and vented with an ultrasonic flaw detector to pick out the unqualified product for re-baking; the surface of the alloy rod after flaw detection is surface-turned with a high-precision lathe To make it a diameter of 198mm, a tolerance of +/-0.1mm, an inner diameter of 191mm, a tolerance of +/-0.1mm, and a length of 200mm, the ends of the alloy material tube are deburred and packaged into the warehouse.

Example 4

An environmentally friendly lead-free new alloy material tube consisting of the following components: zinc, which accounts for 1% of the total weight of the alloy material tube, and tin, which accounts for 1% of the total weight of the alloy material tube, accounts for 2.5% of the total weight of the alloy material tube, accounting for The alloy material has a total weight of 0.5% bismuth, accounting for 1% of the total weight of the alloy material tube, and the balance is copper.

According to the above ratio, the zinc, tin, aluminum, antimony, silicon and electrolytic copper are placed in a power frequency electric furnace, heated to 1250-1300 degrees Celsius, completely melted and then insulated to 1200 degrees Celsius; the fully melted alloy liquid is thoroughly stirred by a special graphite tool. After that, it is covered with high-purity flaky graphite powder to prevent oxidation thereof, and the thickness is 11-13 cm; after 1.2-1.5 hours of incubation, the sample taken from the furnace is used for three to five times with a Spike direct reading spectrometer imported from Germany. Sub-component test to determine the alloy composition within the specified range; after further heat preservation for 40-60 minutes, re-heating to 1300 degrees Celsius, and start the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / sec, using horizontal continuous casting The method was cast into a hollow blank alloy material tube with an outer diameter of 220 mm, an inner diameter of 180 mm and a length of 500 mm; annealing before extrusion, annealing the alloy material tube with a box annealing furnace: annealing temperature of 200-300 degrees Celsius, annealing The time is 20-30 minutes for easy extrusion; the surface of the annealed blank alloy material tube is processed by an optical spindle machine, and the surface is smooth and has a diameter of 215 mm and an inner diameter of 185 mm. 500mm length of the alloy tube, the use of double-action 2000 t Extruder, alloy ingot heating temperature of 100 to 150 ° C, extruded at 300 ° C, extrusion speed V=2mm/s, after repeated extrusion, the alloy material tube diameter is 200mm, the tolerance is +/-1mm, the inner diameter is 190mm, the tolerance is +/-1mm; the extruded alloy material tube is ultrasonically flawed. The instrument performs cracking and stomatal flaw detection to pick out the unqualified product for re-baking; the surface of the alloy rod after flaw detection is surface-turned with a high-precision lathe to a diameter of 198 mm, a tolerance of +/- 0.1 mm, and an inner diameter of 191 mm. The tolerance is +/-0.1mm, and after cutting to a length of 200mm, the ends of the alloy material tube are deburred and packaged into the warehouse.

Example 5

An environmentally friendly lead-free new alloy material tube consisting of the following components: zinc which accounts for 2% of the total weight of the alloy material tube, tin which accounts for 3% of the total weight of the alloy material tube, and aluminum which accounts for 0.5% of the total weight of the alloy material tube, accounting for The alloy material has a total weight of 0.05% bismuth, accounting for 0.5% of the total weight of the alloy material tube, and the balance is copper.

According to the above ratio, the zinc, tin, aluminum, antimony, silicon and electrolytic copper are placed in a power frequency electric furnace, heated to 1250-1300 degrees Celsius, completely melted and then insulated to 1200 degrees Celsius; the fully melted alloy liquid is thoroughly stirred by a special graphite tool. After that, it is covered with high-purity flaky graphite powder to prevent oxidation thereof, and the thickness is 11-13 cm; after 1.2-1.5 hours of incubation, the sample taken from the furnace is used for three to five times with a Spike direct reading spectrometer imported from Germany. Sub-component test to determine the alloy composition within the specified range; after further heat preservation for 40-60 minutes, re-heating to 1300 degrees Celsius, and start the vibration device of the power frequency electric furnace, the vibration frequency is 1 time / sec, using horizontal continuous casting The method was cast into a hollow blank alloy material tube with an outer diameter of 220 mm, an inner diameter of 180 mm and a length of 500 mm; annealing before extrusion, annealing the alloy material tube with a box annealing furnace: annealing temperature of 200-300 degrees Celsius, annealing The time is 20-30 minutes for easy extrusion; the surface of the annealed blank alloy material tube is processed by an optical spindle machine, and the surface is smooth and has a diameter of 215 mm and an inner diameter of 185 mm. The alloy material tube with a length of 500mm is extruded by a 2000-ton double-action extruder. The heating temperature of the alloy ingot is 100-150 degrees Celsius, the extrusion temperature is 300 degrees Celsius, and the extrusion speed is V=2 mm/s. After multiple extrusions. The alloy material has a diameter of 200mm and a tolerance of +/-1mm. An inner diameter of 190mm and a tolerance of +/-1mm; the extruded alloy material tube is cracked and vented with an ultrasonic flaw detector to pick out the unqualified product for re-baking; the alloy after the flaw detection is completed with a high-precision lathe The rod is surface turned to a diameter of 198 mm, a tolerance of +/- 0.1 mm, an inner diameter of 191 mm, a tolerance of +/- 0.1 mm, and a length of 200 mm. After both ends of the alloy material tube are deburred and packaged. Library.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The invention is intended to be modified or equivalently substituted without departing from the spirit and scope of the invention. Within the scope of protection.

Claims

An environmentally friendly lead-free new alloy material tube, characterized in that it is composed of the following components: zinc 1-3% of the total weight of the alloy material tube, and tin of 1-3% of the total weight of the alloy material tube, accounting for the alloy material tube The total weight of 0.5-2.5% aluminum, which accounts for 0.05-0.5% of the total weight of the alloy material tube, accounts for 0.5-1% of the total weight of the alloy material tube, and the balance is copper.
The environmentally-friendly lead-free new alloy material tube according to claim 1, characterized in that it is composed of the following components: zinc, which accounts for 1% of the total weight of the alloy material tube, and tin, which accounts for 1% of the total weight of the alloy material tube, accounts for the alloy material. The total weight of the tube is 0.5% aluminum, which accounts for 0.05% of the total weight of the alloy material tube, and accounts for 0.5% of the total weight of the alloy material tube. The balance is copper.
The environmentally friendly lead-free new alloy material tube according to claim 1, characterized in that it is composed of the following components: zinc which accounts for 2% of the total weight of the alloy material tube, and tin which accounts for 2% of the total weight of the alloy material tube, and accounts for the alloy material. The total weight of the tube is 1.5% aluminum, which accounts for 0.25% of the total weight of the alloy material tube, and accounts for 0.75% of the total weight of the alloy material tube. The balance is copper.
The environmentally friendly lead-free new alloy material tube according to claim 1, characterized in that it is composed of the following components: zinc, which accounts for 3% of the total weight of the alloy material tube, and tin, which accounts for 3% of the total weight of the alloy material tube, accounts for the alloy material. The total weight of the tube is 2.5% of aluminum, which accounts for 0.5% of the total weight of the alloy material tube, and accounts for 1% of the total weight of the alloy material tube. The balance is copper.
The environmentally-friendly lead-free new alloy material tube according to claim 1, characterized in that it is composed of the following components: zinc, which accounts for 1% of the total weight of the alloy material tube, and tin, which accounts for 1% of the total weight of the alloy material tube, accounts for the alloy material. The total weight of the tube is 2.5% of aluminum, which accounts for 0.5% of the total weight of the alloy material tube, and accounts for 1% of the total weight of the alloy material tube. The balance is copper.
The environmentally friendly lead-free new alloy material tube according to claim 1, characterized in that it is composed of the following components: zinc, which accounts for 2% of the total weight of the alloy material tube, and tin, which accounts for 3% of the total weight of the alloy material tube, accounts for the alloy material. The total weight of the tube is 0.5% aluminum, which accounts for 0.05% of the total weight of the alloy material tube, and accounts for 0.5% of the total weight of the alloy material tube. The balance is copper.
The environmentally friendly lead-free new alloy material tube according to any one of claims 1 to 6, wherein the copper is electrolytic copper.
A method for preparing an environmentally friendly lead-free new alloy material tube according to any one of claims 1 to 6, characterized in that it comprises the following steps:

1) Place zinc, tin, aluminum, tantalum, silicon and copper in a power frequency electric furnace according to the ratio, heat to 1250-1300 degrees Celsius, and keep warm to 1200 degrees Celsius after being completely melted;

2) using a special graphite tool to fully stir the completely molten alloy liquid, and then covering it with high-purity flaky graphite powder to prevent oxidation thereof, the thickness is 11-13 cm;

3) After 1.2-1.5 hours of heat preservation, the sample taken out from the furnace is subjected to component inspection by a spectrometer to determine that the alloy composition is within the specified range;

4) After further heat preservation for 40-60 minutes, the temperature is raised again to 1300 degrees Celsius, and the vibration device of the power frequency electric furnace is turned on, the vibration frequency is 1 time/second, and the hollow blank alloy material tube of the specified size is cast by the horizontal continuous casting method;

5) Annealing before extrusion, annealing the alloy material tube with an annealing furnace: annealing temperature is 200-300 degrees Celsius, annealing time is 20-30 minutes, to facilitate extrusion;

6) Surface processing of the annealed blank alloy material tube by an optical spindle machine, processing into an alloy material tube of a predetermined size, and extruding by an extruder, the alloy ingot heating temperature is 100-150 degrees Celsius, and the extrusion temperature is 300 degrees Celsius. , the extrusion speed V=2mm/s, after multiple extrusions to obtain the finished product;

7) The extruded alloy material tube is subjected to cracking and stomatal flaw detection by an ultrasonic flaw detector to pick out the unqualified product and return to the furnace;

8) Surface turning of the alloy material tube after the flaw detection is completed with a high-precision lathe, and an alloy material tube of a predetermined size and length is obtained, and both ends of the alloy material tube are deburred and packaged into the warehouse.
The method for preparing an environmentally friendly lead-free new alloy material tube according to claim 8, wherein the spectrometer in the step 3) adopts a Spike direct reading spectrometer.
The method for preparing an environmentally friendly lead-free new alloy material tube according to claim 8, wherein the number of component inspections in the step 3) is 3-5 times.